120745640 has 32 divisors (see below), whose sum is σ = 273490560. Its totient is φ = 47976000.

The previous prime is 120745637. The next prime is 120745649. The reversal of 120745640 is 46547021.

It is not an unprimeable number, because it can be changed into a prime (120745649) 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, 3956 + ... + 16035.

It is an arithmetic number, because the mean of its divisors is an integer number (8546580).

Almost surely, 2^120745640 is an apocalyptic number.

120745640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120745640 is an abundant number, since it is smaller than the sum of its proper divisors (152744920).

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

120745640 is a wasteful number, since it uses less digits than its factorization.

120745640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20153 (or 20149 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 120745640 is about 10988.4320992578. The cubic root of 120745640 is about 494.2619208001.

The spelling of 120745640 in words is "one hundred twenty million, seven hundred forty-five thousand, six hundred forty".