120531390 has 64 divisors (see below), whose sum is σ = 338688000. Its totient is φ = 26876160.

The previous prime is 120531361. The next prime is 120531391. The reversal of 120531390 is 93135021.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120531390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120531391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611 + ... + 15609.

It is an arithmetic number, because the mean of its divisors is an integer number (5292000).

Almost surely, 2^120531390 is an apocalyptic number.

120531390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120531390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169344000).

120531390 is an abundant number, since it is smaller than the sum of its proper divisors (218156610).

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

120531390 is a wasteful number, since it uses less digits than its factorization.

120531390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14057.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 120531390 is about 10978.6788822699. The cubic root of 120531390 is about 493.9694097226.

The spelling of 120531390 in words is "one hundred twenty million, five hundred thirty-one thousand, three hundred ninety".