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4030041021 = 31343347007
BaseRepresentation
bin1111000000110101…
…1000101110111101
3101101212020021222120
43300031120232331
531223142303041
61503521433153
7201603532506
oct36015305675
911355207876
104030041021
111788942516
1294579b7b9
134c2c0c276
142a3333bad
15188c0b366
hexf0358bbd

4030041021 has 4 divisors (see below), whose sum is σ = 5373388032. Its totient is φ = 2686694012.

The previous prime is 4030040957. The next prime is 4030041049. The reversal of 4030041021 is 1201400304.

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.

It is a cyclic number.

It is not a de Polignac number, because 4030041021 - 26 = 4030040957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030041061) 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, 671673501 + ... + 671673506.

It is an arithmetic number, because the mean of its divisors is an integer number (1343347008).

Almost surely, 24030041021 is an apocalyptic number.

It is an amenable number.

4030041021 is a deficient number, since it is larger than the sum of its proper divisors (1343347011).

4030041021 is a wasteful number, since it uses less digits than its factorization.

4030041021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343347010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4030041021 is about 63482.6040817483. The cubic root of 4030041021 is about 1591.3650738909.

Adding to 4030041021 its reverse (1201400304), we get a palindrome (5231441325).

The spelling of 4030041021 in words is "four billion, thirty million, forty-one thousand, twenty-one".

Divisors: 1 3 1343347007 4030041021