102080639 has 2 divisors, whose sum is σ = 102080640. Its totient is φ = 102080638.

The previous prime is 102080623. The next prime is 102080651. The reversal of 102080639 is 936080201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102080639 - 2⁴ = 102080623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102080659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51040319 + 51040320.

It is an arithmetic number, because the mean of its divisors is an integer number (51040320).

Almost surely, 2^102080639 is an apocalyptic number.

102080639 is a deficient number, since it is larger than the sum of its proper divisors (1).

102080639 is an equidigital number, since it uses as much as digits as its factorization.

102080639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 102080639 is about 10103.4963750179. The cubic root of 102080639 is about 467.3559684795.

The spelling of 102080639 in words is "one hundred two million, eighty thousand, six hundred thirty-nine".