102804157 has 4 divisors (see below), whose sum is σ = 102889440. Its totient is φ = 102718876.

The previous prime is 102804133. The next prime is 102804161. The reversal of 102804157 is 751408201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102804157 - 2¹¹ = 102802109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102804127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40807 + ... + 43252.

It is an arithmetic number, because the mean of its divisors is an integer number (25722360).

Almost surely, 2^102804157 is an apocalyptic number.

It is an amenable number.

102804157 is a deficient number, since it is larger than the sum of its proper divisors (85283).

102804157 is an equidigital number, since it uses as much as digits as its factorization.

102804157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85282.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 102804157 is about 10139.2384822530. The cubic root of 102804157 is about 468.4575312874.

The spelling of 102804157 in words is "one hundred two million, eight hundred four thousand, one hundred fifty-seven".