40431402424 has 32 divisors (see below), whose sum is σ = 86975866080. Its totient is φ = 17260314624.

The previous prime is 40431402421. The next prime is 40431402437. The reversal of 40431402424 is 42420413404.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40431402392 and 40431402401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431402421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390257 + ... + 1419040.

It is an arithmetic number, because the mean of its divisors is an integer number (2717995815).

Almost surely, 2^40431402424 is an apocalyptic number.

It is an amenable number.

40431402424 is an abundant number, since it is smaller than the sum of its proper divisors (46544463656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40431402424 is a wasteful number, since it uses less digits than its factorization.

40431402424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809567 (or 2809563 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40431402424 its reverse (42420413404), we get a palindrome (82851815828).

The spelling of 40431402424 in words is "forty billion, four hundred thirty-one million, four hundred two thousand, four hundred twenty-four".