102420120 has 64 divisors (see below), whose sum is σ = 335197440. Its totient is φ = 24828800.

The previous prime is 102420119. The next prime is 102420133. The reversal of 102420120 is 21024201.

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 = 102420096 and 102420105.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 37476 + ... + 40115.

It is an arithmetic number, because the mean of its divisors is an integer number (5237460).

Almost surely, 2^102420120 is an apocalyptic number.

102420120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102420120 is an abundant number, since it is smaller than the sum of its proper divisors (232777320).

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

102420120 is a wasteful number, since it uses less digits than its factorization.

102420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77616 (or 77612 counting only the distinct ones).

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

The square root of 102420120 is about 10120.2826047497. The cubic root of 102420120 is about 467.8734773766.

Adding to 102420120 its reverse (21024201), we get a palindrome (123444321).

The spelling of 102420120 in words is "one hundred two million, four hundred twenty thousand, one hundred twenty".