120255640 has 16 divisors (see below), whose sum is σ = 270575280. Its totient is φ = 48102240.

The previous prime is 120255631. The next prime is 120255659. The reversal of 120255640 is 46552021.

It is a super-2 number, since 2×120255640² = 28922837903619200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503156 + ... + 1503235.

It is an arithmetic number, because the mean of its divisors is an integer number (16910955).

Almost surely, 2^120255640 is an apocalyptic number.

120255640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120255640 is an abundant number, since it is smaller than the sum of its proper divisors (150319640).

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

120255640 is a wasteful number, since it uses less digits than its factorization.

120255640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006402 (or 3006398 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 120255640 is about 10966.1132585798. The cubic root of 120255640 is about 493.5924233580.

The spelling of 120255640 in words is "one hundred twenty million, two hundred fifty-five thousand, six hundred forty".