102149902 has 4 divisors (see below), whose sum is σ = 153224856. Its totient is φ = 51074950.

The previous prime is 102149899. The next prime is 102149911. The reversal of 102149902 is 209941201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25537474 + ... + 25537477.

It is an arithmetic number, because the mean of its divisors is an integer number (38306214).

Almost surely, 2^102149902 is an apocalyptic number.

102149902 is a deficient number, since it is larger than the sum of its proper divisors (51074954).

102149902 is an equidigital number, since it uses as much as digits as its factorization.

102149902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51074953.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 102149902 is about 10106.9234685932. The cubic root of 102149902 is about 467.4616468865.

The spelling of 102149902 in words is "one hundred two million, one hundred forty-nine thousand, nine hundred two".