120551240 has 32 divisors (see below), whose sum is σ = 277015680. Its totient is φ = 47193792.

The previous prime is 120551237. The next prime is 120551243. The reversal of 120551240 is 42155021.

It is an interprime number because it is at equal distance from previous prime (120551237) and next prime (120551243).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (120551243) 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, 30182 + ... + 33941.

It is an arithmetic number, because the mean of its divisors is an integer number (8656740).

Almost surely, 2^120551240 is an apocalyptic number.

120551240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120551240 is an abundant number, since it is smaller than the sum of its proper divisors (156464440).

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

120551240 is a wasteful number, since it uses less digits than its factorization.

120551240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64181 (or 64177 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 120551240 is about 10979.5828700365. The cubic root of 120551240 is about 493.9965250784.

The spelling of 120551240 in words is "one hundred twenty million, five hundred fifty-one thousand, two hundred forty".