40520412 has 30 divisors (see below), whose sum is σ = 105929208. Its totient is φ = 13506696.

The previous prime is 40520393. The next prime is 40520413. The reversal of 40520412 is 21402504.

40520412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62208 + ... + 62855.

Almost surely, 2^40520412 is an apocalyptic number.

It is an amenable number.

40520412 is an abundant number, since it is smaller than the sum of its proper divisors (65408796).

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

40520412 is a wasteful number, since it uses less digits than its factorization.

40520412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125079 (or 125068 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40520412 is about 6365.5645468411. The cubic root of 40520412 is about 343.4719566740.

Adding to 40520412 its reverse (21402504), we get a palindrome (61922916).

The spelling of 40520412 in words is "forty million, five hundred twenty thousand, four hundred twelve".