642362051 has 16 divisors (see below), whose sum is σ = 717219360. Its totient is φ = 571737600.

The previous prime is 642362023. The next prime is 642362059. The reversal of 642362051 is 150263246.

It is a cyclic number.

It is not a de Polignac number, because 642362051 - 2⁶ = 642361987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642362059) 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, 225005 + ... + 227841.

It is an arithmetic number, because the mean of its divisors is an integer number (44826210).

Almost surely, 2^642362051 is an apocalyptic number.

642362051 is a deficient number, since it is larger than the sum of its proper divisors (74857309).

642362051 is a wasteful number, since it uses less digits than its factorization.

642362051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 642362051 is about 25344.8624182496. The cubic root of 642362051 is about 862.8327586993.

The spelling of 642362051 in words is "six hundred forty-two million, three hundred sixty-two thousand, fifty-one".