42431045 has 16 divisors (see below), whose sum is σ = 52589568. Its totient is φ = 32840640.

The previous prime is 42431041. The next prime is 42431057. The reversal of 42431045 is 54013424.

It is not a de Polignac number, because 42431045 - 2² = 42431041 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 42431045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38492 + ... + 39578.

It is an arithmetic number, because the mean of its divisors is an integer number (3286848).

Almost surely, 2^42431045 is an apocalyptic number.

It is an amenable number.

42431045 is a deficient number, since it is larger than the sum of its proper divisors (10158523).

42431045 is a wasteful number, since it uses less digits than its factorization.

42431045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42431045 is about 6513.9116512277. The cubic root of 42431045 is about 348.7877654234.

Adding to 42431045 its reverse (54013424), we get a palindrome (96444469).

The spelling of 42431045 in words is "forty-two million, four hundred thirty-one thousand, forty-five".