642782962 has 4 divisors (see below), whose sum is σ = 964174446. Its totient is φ = 321391480.

The previous prime is 642782927. The next prime is 642782983. The reversal of 642782962 is 269287246.

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., 631567161 + 11215801 = 25131^2 + 3349^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160695739 + ... + 160695742.

Almost surely, 2^642782962 is an apocalyptic number.

642782962 is a deficient number, since it is larger than the sum of its proper divisors (321391484).

642782962 is a wasteful number, since it uses less digits than its factorization.

642782962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321391483.

The product of its digits is 580608, while the sum is 46.

The square root of 642782962 is about 25353.1647334213. The cubic root of 642782962 is about 863.0211760689.

The spelling of 642782962 in words is "six hundred forty-two million, seven hundred eighty-two thousand, nine hundred sixty-two".