74120312 has 16 divisors (see below), whose sum is σ = 158829360. Its totient is φ = 31765824.

The previous prime is 74120279. The next prime is 74120339. The reversal of 74120312 is 21302147.

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, 661733 + ... + 661844.

It is an arithmetic number, because the mean of its divisors is an integer number (9926835).

Almost surely, 2^74120312 is an apocalyptic number.

It is an amenable number.

74120312 is an abundant number, since it is smaller than the sum of its proper divisors (84709048).

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

74120312 is a wasteful number, since it uses less digits than its factorization.

74120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323590 (or 1323586 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 74120312 is about 8609.3154199390. The cubic root of 74120312 is about 420.0610493268.

Adding to 74120312 its reverse (21302147), we get a palindrome (95422459).

The spelling of 74120312 in words is "seventy-four million, one hundred twenty thousand, three hundred twelve".