42434931 has 64 divisors (see below), whose sum is σ = 75571200. Its totient is φ = 20956320.

The previous prime is 42434921. The next prime is 42434969. The reversal of 42434931 is 13943424.

It is not a de Polignac number, because 42434931 - 2⁷ = 42434803 is a prime.

It is a super-2 number, since 2×42434931² = 3601446737949522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42434911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 260256 + ... + 260418.

It is an arithmetic number, because the mean of its divisors is an integer number (1180800).

Almost surely, 2^42434931 is an apocalyptic number.

42434931 is a deficient number, since it is larger than the sum of its proper divisors (33136269).

42434931 is a wasteful number, since it uses less digits than its factorization.

42434931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 207 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 42434931 is about 6514.2099290704. The cubic root of 42434931 is about 348.7984128780.

It can be divided in two parts, 42434 and 931, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 42434931 in words is "forty-two million, four hundred thirty-four thousand, nine hundred thirty-one".