102402120 has 64 divisors (see below), whose sum is σ = 307909440. Its totient is φ = 27244800.

The previous prime is 102402119. The next prime is 102402127. The reversal of 102402120 is 21204201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102402096 and 102402105.

It is not an unprimeable number, because it can be changed into a prime (102402127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78675 + ... + 79965.

It is an arithmetic number, because the mean of its divisors is an integer number (4811085).

Almost surely, 2^102402120 is an apocalyptic number.

102402120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102402120 is an abundant number, since it is smaller than the sum of its proper divisors (205507320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102402120 is a wasteful number, since it uses less digits than its factorization.

102402120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 102402120 is about 10119.3932624441. The cubic root of 102402120 is about 467.8460666947.

Adding to 102402120 its reverse (21204201), we get a palindrome (123606321).

The spelling of 102402120 in words is "one hundred two million, four hundred two thousand, one hundred twenty".