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307542041 = 319920711
BaseRepresentation
bin10010010101001…
…011100000011001
3210102200202100222
4102111023200121
51112212321131
650303405425
710423031012
oct2225134031
9712622328
10307542041
11148665984
1286bb3875
134b93b951
142cbb8009
151beed87b
hex1254b819

307542041 has 4 divisors (see below), whose sum is σ = 317462784. Its totient is φ = 297621300.

The previous prime is 307542007. The next prime is 307542047. The reversal of 307542041 is 140245703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140245703 = 1310788131.

It is a cyclic number.

It is not a de Polignac number, because 307542041 - 218 = 307279897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 307542041.

It is not an unprimeable number, because it can be changed into a prime (307542047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4960325 + ... + 4960386.

It is an arithmetic number, because the mean of its divisors is an integer number (79365696).

Almost surely, 2307542041 is an apocalyptic number.

307542041 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

307542041 is a deficient number, since it is larger than the sum of its proper divisors (9920743).

307542041 is an equidigital number, since it uses as much as digits as its factorization.

307542041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920742.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 307542041 is about 17536.8766033179. The cubic root of 307542041 is about 674.9964634474.

Adding to 307542041 its reverse (140245703), we get a palindrome (447787744).

The spelling of 307542041 in words is "three hundred seven million, five hundred forty-two thousand, forty-one".

Divisors: 1 31 9920711 307542041