Search a number
-
+
42030231 = 315239199
BaseRepresentation
bin1010000001010…
…1010010010111
32221002100122020
42200111102113
541224431411
64100504223
71020152055
oct240252227
987070566
1042030231
11217a7a31
12120ab073
138927979
1458211d5
153a53606
hex2815497

42030231 has 8 divisors (see below), whose sum is σ = 56083200. Its totient is φ = 27998712.

The previous prime is 42030227. The next prime is 42030253. The reversal of 42030231 is 13203024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42030231 - 22 = 42030227 is a prime.

It is a super-2 number, since 2×420302312 = 3533080635826722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42030231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31 + ... + 9168.

It is an arithmetic number, because the mean of its divisors is an integer number (7010400).

Almost surely, 242030231 is an apocalyptic number.

42030231 is a deficient number, since it is larger than the sum of its proper divisors (14052969).

42030231 is a wasteful number, since it uses less digits than its factorization.

42030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10725.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 42030231 is about 6483.0726511431. The cubic root of 42030231 is about 347.6860442974.

Adding to 42030231 its reverse (13203024), we get a palindrome (55233255).

It can be divided in two parts, 4203023 and 1, that added together give a palindrome (4203024).

The spelling of 42030231 in words is "forty-two million, thirty thousand, two hundred thirty-one".

Divisors: 1 3 1523 4569 9199 27597 14010077 42030231