120640230 has 24 divisors (see below), whose sum is σ = 313664832. Its totient is φ = 32170704.

The previous prime is 120640229. The next prime is 120640237. The reversal of 120640230 is 32046021.

It is a happy number.

120640230 is a `hidden beast` number, since 1 + 2 + 0 + 640 + 23 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120640237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670134 + ... + 670313.

It is an arithmetic number, because the mean of its divisors is an integer number (13069368).

Almost surely, 2^120640230 is an apocalyptic number.

120640230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120640230 is an abundant number, since it is smaller than the sum of its proper divisors (193024602).

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

120640230 is a wasteful number, since it uses less digits than its factorization.

120640230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340460 (or 1340457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 120640230 is about 10983.6346443243. The cubic root of 120640230 is about 494.1180499947.

Adding to 120640230 its reverse (32046021), we get a palindrome (152686251).

The spelling of 120640230 in words is "one hundred twenty million, six hundred forty thousand, two hundred thirty".