642062534 has 8 divisors (see below), whose sum is σ = 966171720. Its totient is φ = 320005296.

The previous prime is 642062513. The next prime is 642062539. The reversal of 642062534 is 435260246.

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

It is a self number, because there is not a number n which added to its sum of digits gives 642062534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642062539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512204 + ... + 513455.

It is an arithmetic number, because the mean of its divisors is an integer number (120771465).

Almost surely, 2^642062534 is an apocalyptic number.

642062534 is a deficient number, since it is larger than the sum of its proper divisors (324109186).

642062534 is a wasteful number, since it uses less digits than its factorization.

642062534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025974.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 642062534 is about 25338.9528986499. The cubic root of 642062534 is about 862.6986322327.

The spelling of 642062534 in words is "six hundred forty-two million, sixty-two thousand, five hundred thirty-four".