40131212424 has 64 divisors (see below), whose sum is σ = 101817492480. Its totient is φ = 13178760000.

The previous prime is 40131212377. The next prime is 40131212461. The reversal of 40131212424 is 42421213104.

It is a super-2 number, since 2×40131212424² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 40131212394 and 40131212403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2464389 + ... + 2480619.

It is an arithmetic number, because the mean of its divisors is an integer number (1590898320).

Almost surely, 2^40131212424 is an apocalyptic number.

It is an amenable number.

40131212424 is an abundant number, since it is smaller than the sum of its proper divisors (61686280056).

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

40131212424 is a wasteful number, since it uses less digits than its factorization.

40131212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17762 (or 17758 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 40131212424 its reverse (42421213104), we get a palindrome (82552425528).

The spelling of 40131212424 in words is "forty billion, one hundred thirty-one million, two hundred twelve thousand, four hundred twenty-four".