642020246 has 24 divisors (see below), whose sum is σ = 1130556240. Its totient is φ = 272622672.

The previous prime is 642020237. The next prime is 642020251.

642020246 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19370 + ... + 40733.

It is an arithmetic number, because the mean of its divisors is an integer number (47106510).

Almost surely, 2^642020246 is an apocalyptic number.

642020246 is a deficient number, since it is larger than the sum of its proper divisors (488535994).

642020246 is a wasteful number, since it uses less digits than its factorization.

642020246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60228 (or 60221 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 642020246 is about 25338.1184384318. The cubic root of 642020246 is about 862.6796919172.

The spelling of 642020246 in words is "six hundred forty-two million, twenty thousand, two hundred forty-six".