120375561 has 16 divisors (see below), whose sum is σ = 164026944. Its totient is φ = 78496704.

The previous prime is 120375559. The next prime is 120375581. The reversal of 120375561 is 165573021.

It is not a de Polignac number, because 120375561 - 2¹ = 120375559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120375581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62170 + ... + 64076.

It is an arithmetic number, because the mean of its divisors is an integer number (10251684).

Almost surely, 2^120375561 is an apocalyptic number.

It is an amenable number.

120375561 is a deficient number, since it is larger than the sum of its proper divisors (43651383).

120375561 is a wasteful number, since it uses less digits than its factorization.

120375561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 120375561 is about 10971.5796948297. The cubic root of 120375561 is about 493.7564418110.

The spelling of 120375561 in words is "one hundred twenty million, three hundred seventy-five thousand, five hundred sixty-one".