120645345 has 64 divisors (see below), whose sum is σ = 221287680. Its totient is φ = 55738368.

The previous prime is 120645337. The next prime is 120645347. The reversal of 120645345 is 543546021.

It is not a de Polignac number, because 120645345 - 2³ = 120645337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120645347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 178929 + ... + 179601.

It is an arithmetic number, because the mean of its divisors is an integer number (3457620).

Almost surely, 2^120645345 is an apocalyptic number.

120645345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120645345 is a deficient number, since it is larger than the sum of its proper divisors (100642335).

120645345 is a wasteful number, since it uses less digits than its factorization.

120645345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 120645345 is about 10983.8674882757. The cubic root of 120645345 is about 494.1250332321.

The spelling of 120645345 in words is "one hundred twenty million, six hundred forty-five thousand, three hundred forty-five".