120102129 has 16 divisors (see below), whose sum is σ = 203347840. Its totient is φ = 68629680.

The previous prime is 120102121. The next prime is 120102131. The reversal of 120102129 is 921201021.

It is not a de Polignac number, because 120102129 - 2³ = 120102121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120102121) 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, 317542 + ... + 317919.

It is an arithmetic number, because the mean of its divisors is an integer number (12709240).

Almost surely, 2^120102129 is an apocalyptic number.

It is an amenable number.

120102129 is a deficient number, since it is larger than the sum of its proper divisors (83245711).

120102129 is an equidigital number, since it uses as much as digits as its factorization.

120102129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635477 (or 635471 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 120102129 is about 10959.1116884536. Note that the first 3 decimals coincide. The cubic root of 120102129 is about 493.3823039510.

The spelling of 120102129 in words is "one hundred twenty million, one hundred two thousand, one hundred twenty-nine".