642370001 has 16 divisors (see below), whose sum is σ = 809897088. Its totient is φ = 495849600.

The previous prime is 642369983. The next prime is 642370019. The reversal of 642370001 is 100073246.

It is an interprime number because it is at equal distance from previous prime (642369983) and next prime (642370019).

It is a cyclic number.

It is not a de Polignac number, because 642370001 - 2¹⁰ = 642368977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642370081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82355 + ... + 89816.

It is an arithmetic number, because the mean of its divisors is an integer number (50618568).

Almost surely, 2^642370001 is an apocalyptic number.

It is an amenable number.

642370001 is a deficient number, since it is larger than the sum of its proper divisors (167527087).

642370001 is a wasteful number, since it uses less digits than its factorization.

642370001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172232.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 642370001 is about 25345.0192542835. The cubic root of 642370001 is about 862.8363182144.

The spelling of 642370001 in words is "six hundred forty-two million, three hundred seventy thousand, one".