102839057 has 2 divisors, whose sum is σ = 102839058. Its totient is φ = 102839056.

The previous prime is 102839053. The next prime is 102839063. The reversal of 102839057 is 750938201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 25240576 = 8809^2 + 5024^2 .

It is a cyclic number.

It is not a de Polignac number, because 102839057 - 2² = 102839053 is a prime.

It is not a weakly prime, because it can be changed into another prime (102839053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51419528 + 51419529.

It is an arithmetic number, because the mean of its divisors is an integer number (51419529).

Almost surely, 2^102839057 is an apocalyptic number.

It is an amenable number.

102839057 is a deficient number, since it is larger than the sum of its proper divisors (1).

102839057 is an equidigital number, since it uses as much as digits as its factorization.

102839057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102839057 is about 10140.9593727615. The cubic root of 102839057 is about 468.5105360121.

The spelling of 102839057 in words is "one hundred two million, eight hundred thirty-nine thousand, fifty-seven".