40120512 has 28 divisors (see below), whose sum is σ = 106152696. Its totient is φ = 13373440.

The previous prime is 40120511. The next prime is 40120513. The reversal of 40120512 is 21502104.

It is an interprime number because it is at equal distance from previous prime (40120511) and next prime (40120513).

It is a junction number, because it is equal to n+sod(n) for n = 40120491 and 40120500.

It is not an unprimeable number, because it can be changed into a prime (40120511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104289 + ... + 104672.

Almost surely, 2^40120512 is an apocalyptic number.

It is an amenable number.

40120512 is an abundant number, since it is smaller than the sum of its proper divisors (66032184).

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

40120512 is a wasteful number, since it uses less digits than its factorization.

40120512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208976 (or 208966 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 40120512 is about 6334.0754652909. The cubic root of 40120512 is about 342.3382993605.

Adding to 40120512 its reverse (21502104), we get a palindrome (61622616).

The spelling of 40120512 in words is "forty million, one hundred twenty thousand, five hundred twelve".