642476 has 6 divisors (see below), whose sum is σ = 1124340. Its totient is φ = 321236.

The previous prime is 642457. The next prime is 642487. The reversal of 642476 is 674246.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642476.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80306 + ... + 80313.

It is an arithmetic number, because the mean of its divisors is an integer number (187390).

2⁶⁴²⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

642476 is a deficient number, since it is larger than the sum of its proper divisors (481864).

642476 is a wasteful number, since it uses less digits than its factorization.

642476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160623 (or 160621 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 642476 is about 801.5460061656. The cubic root of 642476 is about 86.2883775161.

The spelling of 642476 in words is "six hundred forty-two thousand, four hundred seventy-six".