40131212404 has 12 divisors (see below), whose sum is σ = 70700962500. Its totient is φ = 19930937408.

The previous prime is 40131212377. The next prime is 40131212461. The reversal of 40131212404 is 40421213104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25504728804 + 14626483600 = 159702^2 + 120940^2 .

It is a super-2 number, since 2×40131212404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33666529 + ... + 33667720.

It is an arithmetic number, because the mean of its divisors is an integer number (5891746875).

Almost surely, 2^40131212404 is an apocalyptic number.

It is an amenable number.

40131212404 is a deficient number, since it is larger than the sum of its proper divisors (30569750096).

40131212404 is a wasteful number, since it uses less digits than its factorization.

40131212404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67334402 (or 67334400 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 40131212404 its reverse (40421213104), we get a palindrome (80552425508).

The spelling of 40131212404 in words is "forty billion, one hundred thirty-one million, two hundred twelve thousand, four hundred four".