102762139 has 2 divisors, whose sum is σ = 102762140. Its totient is φ = 102762138.

The previous prime is 102762119. The next prime is 102762197. The reversal of 102762139 is 931267201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102762139 - 2⁹ = 102761627 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102762139.

It is not a weakly prime, because it can be changed into another prime (102762119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51381069 + 51381070.

It is an arithmetic number, because the mean of its divisors is an integer number (51381070).

Almost surely, 2^102762139 is an apocalyptic number.

102762139 is a deficient number, since it is larger than the sum of its proper divisors (1).

102762139 is an equidigital number, since it uses as much as digits as its factorization.

102762139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 102762139 is about 10137.1662213855. The cubic root of 102762139 is about 468.3937001109.

It can be divided in two parts, 1027 and 62139, that multiplied together give a triangular number (63816753 = T₁₁₂₉₇).

The spelling of 102762139 in words is "one hundred two million, seven hundred sixty-two thousand, one hundred thirty-nine".