120388390 has 48 divisors (see below), whose sum is σ = 235519488. Its totient is φ = 44153088.

The previous prime is 120388369. The next prime is 120388391. The reversal of 120388390 is 93883021.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120388391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314139 + ... + 314521.

It is an arithmetic number, because the mean of its divisors is an integer number (4906656).

Almost surely, 2^120388390 is an apocalyptic number.

120388390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120388390 is a deficient number, since it is larger than the sum of its proper divisors (115131098).

120388390 is a wasteful number, since it uses less digits than its factorization.

120388390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 120388390 is about 10972.1643261482. The cubic root of 120388390 is about 493.7739818507.

The spelling of 120388390 in words is "one hundred twenty million, three hundred eighty-eight thousand, three hundred ninety".