74257402 has 8 divisors (see below), whose sum is σ = 111849012. Its totient is φ = 36974400.

The previous prime is 74257397. The next prime is 74257423. The reversal of 74257402 is 20475247.

It can be written as a sum of positive squares in 2 ways, for example, as 71757841 + 2499561 = 8471^2 + 1581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 76549 + ... + 77512.

Almost surely, 2^74257402 is an apocalyptic number.

74257402 is a deficient number, since it is larger than the sum of its proper divisors (37591610).

74257402 is a wasteful number, since it uses less digits than its factorization.

74257402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154304.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 74257402 is about 8617.2734667063. The cubic root of 74257402 is about 420.3198659323.

The spelling of 74257402 in words is "seventy-four million, two hundred fifty-seven thousand, four hundred two".