42130431 has 12 divisors (see below), whose sum is σ = 69548752. Its totient is φ = 24074496.

The previous prime is 42130427. The next prime is 42130441. The reversal of 42130431 is 13403124.

It is not a de Polignac number, because 42130431 - 2² = 42130427 is a prime.

It is a super-2 number, since 2×42130431² = 3549946432491522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334306 + ... + 334431.

Almost surely, 2^42130431 is an apocalyptic number.

42130431 is a deficient number, since it is larger than the sum of its proper divisors (27418321).

42130431 is a wasteful number, since it uses less digits than its factorization.

42130431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668750 (or 668747 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 42130431 is about 6490.7958679965. The cubic root of 42130431 is about 347.9621193409.

Adding to 42130431 its reverse (13403124), we get a palindrome (55533555).

The spelling of 42130431 in words is "forty-two million, one hundred thirty thousand, four hundred thirty-one".