57129434 has 4 divisors (see below), whose sum is σ = 85694154. Its totient is φ = 28564716.

The previous prime is 57129427. The next prime is 57129439. The reversal of 57129434 is 43492175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 172225 = 7547^2 + 415^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57129394 and 57129403.

It is not an unprimeable number, because it can be changed into a prime (57129439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14282357 + ... + 14282360.

Almost surely, 2^57129434 is an apocalyptic number.

57129434 is a deficient number, since it is larger than the sum of its proper divisors (28564720).

57129434 is a wasteful number, since it uses less digits than its factorization.

57129434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28564719.

The product of its digits is 30240, while the sum is 35.

The square root of 57129434 is about 7558.4015505926. The cubic root of 57129434 is about 385.1411951898.

The spelling of 57129434 in words is "fifty-seven million, one hundred twenty-nine thousand, four hundred thirty-four".