642472274246 has 32 divisors (see below), whose sum is σ = 1081165459968. Its totient is φ = 283844959840.

The previous prime is 642472274233. The next prime is 642472274267.

642472274246 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 642472274194 and 642472274203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2450030 + ... + 2699553.

It is an arithmetic number, because the mean of its divisors is an integer number (33786420624).

Almost surely, 2^642472274246 is an apocalyptic number.

642472274246 is a deficient number, since it is larger than the sum of its proper divisors (438693185722).

642472274246 is a wasteful number, since it uses less digits than its factorization.

642472274246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149756.

The product of its digits is 7225344, while the sum is 50.

The spelling of 642472274246 in words is "six hundred forty-two billion, four hundred seventy-two million, two hundred seventy-four thousand, two hundred forty-six".