102026839 has 2 divisors, whose sum is σ = 102026840. Its totient is φ = 102026838.

The previous prime is 102026803. The next prime is 102026879. The reversal of 102026839 is 938620201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102026839 - 2⁷ = 102026711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102026839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102026879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51013419 + 51013420.

It is an arithmetic number, because the mean of its divisors is an integer number (51013420).

Almost surely, 2^102026839 is an apocalyptic number.

102026839 is a deficient number, since it is larger than the sum of its proper divisors (1).

102026839 is an equidigital number, since it uses as much as digits as its factorization.

102026839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 102026839 is about 10100.8335794626. The cubic root of 102026839 is about 467.2738498400.

The spelling of 102026839 in words is "one hundred two million, twenty-six thousand, eight hundred thirty-nine".