642072883 has 2 divisors, whose sum is σ = 642072884. Its totient is φ = 642072882.

The previous prime is 642072799. The next prime is 642072889. The reversal of 642072883 is 388270246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642072883 is a prime.

It is not a weakly prime, because it can be changed into another prime (642072889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321036441 + 321036442.

It is an arithmetic number, because the mean of its divisors is an integer number (321036442).

Almost surely, 2^642072883 is an apocalyptic number.

642072883 is a deficient number, since it is larger than the sum of its proper divisors (1).

642072883 is an equidigital number, since it uses as much as digits as its factorization.

642072883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 642072883 is about 25339.1571091068. The cubic root of 642072883 is about 862.7032673057.

The spelling of 642072883 in words is "six hundred forty-two million, seventy-two thousand, eight hundred eighty-three".