502708642 has 4 divisors (see below), whose sum is σ = 754062966. Its totient is φ = 251354320.

The previous prime is 502708639. The next prime is 502708643. The reversal of 502708642 is 246807205.

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., 500461641 + 2247001 = 22371^2 + 1499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 502708598 and 502708607.

It is not an unprimeable number, because it can be changed into a prime (502708643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125677159 + ... + 125677162.

Almost surely, 2^502708642 is an apocalyptic number.

502708642 is a deficient number, since it is larger than the sum of its proper divisors (251354324).

502708642 is a wasteful number, since it uses less digits than its factorization.

502708642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251354323.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 502708642 is about 22421.1650455546. The cubic root of 502708642 is about 795.1311793872.

The spelling of 502708642 in words is "five hundred two million, seven hundred eight thousand, six hundred forty-two".