642076475 has 12 divisors (see below), whose sum is σ = 796504824. Its totient is φ = 513448320.

The previous prime is 642076471. The next prime is 642076483. The reversal of 642076475 is 574670246.

It is not a de Polignac number, because 642076475 - 2² = 642076471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642076471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88952 + ... + 95898.

It is an arithmetic number, because the mean of its divisors is an integer number (66375402).

Almost surely, 2^642076475 is an apocalyptic number.

642076475 is a deficient number, since it is larger than the sum of its proper divisors (154428349).

642076475 is a wasteful number, since it uses less digits than its factorization.

642076475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654 (or 10649 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 642076475 is about 25339.2279874506. The cubic root of 642076475 is about 862.7048760661.

The spelling of 642076475 in words is "six hundred forty-two million, seventy-six thousand, four hundred seventy-five".