74520412 has 12 divisors (see below), whose sum is σ = 131876640. Its totient is φ = 36841376.

The previous prime is 74520403. The next prime is 74520421. The reversal of 74520412 is 21402547.

It is an interprime number because it is at equal distance from previous prime (74520403) and next prime (74520421).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 104308 + ... + 105019.

It is an arithmetic number, because the mean of its divisors is an integer number (10989720).

Almost surely, 2^74520412 is an apocalyptic number.

It is an amenable number.

74520412 is a deficient number, since it is larger than the sum of its proper divisors (57356228).

74520412 is a wasteful number, since it uses less digits than its factorization.

74520412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209420 (or 209418 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 74520412 is about 8632.5206052462. The cubic root of 74520412 is about 420.8155205304.

Adding to 74520412 its reverse (21402547), we get a palindrome (95922959).

The spelling of 74520412 in words is "seventy-four million, five hundred twenty thousand, four hundred twelve".