120257720 has 32 divisors (see below), whose sum is σ = 295179120. Its totient is φ = 43729920.

The previous prime is 120257719. The next prime is 120257723. The reversal of 120257720 is 27752021.

It is a self number, because there is not a number n which added to its sum of digits gives 120257720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120257723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136217 + ... + 137096.

Almost surely, 2^120257720 is an apocalyptic number.

120257720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120257720 is an abundant number, since it is smaller than the sum of its proper divisors (174921400).

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

120257720 is a wasteful number, since it uses less digits than its factorization.

120257720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273335 (or 273331 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 120257720 is about 10966.2080957822. The cubic root of 120257720 is about 493.5952691464.

The spelling of 120257720 in words is "one hundred twenty million, two hundred fifty-seven thousand, seven hundred twenty".