120556149 has 16 divisors (see below), whose sum is σ = 184227840. Its totient is φ = 68693040.

The previous prime is 120556127. The next prime is 120556169. The reversal of 120556149 is 941655021.

It is not a de Polignac number, because 120556149 - 2⁹ = 120555637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120556109) 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, 457 + ... + 15534.

It is an arithmetic number, because the mean of its divisors is an integer number (11514240).

Almost surely, 2^120556149 is an apocalyptic number.

It is an amenable number.

120556149 is a deficient number, since it is larger than the sum of its proper divisors (63671691).

120556149 is a wasteful number, since it uses less digits than its factorization.

120556149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16360.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 120556149 is about 10979.8064190586. The cubic root of 120556149 is about 494.0032303766.

The spelling of 120556149 in words is "one hundred twenty million, five hundred fifty-six thousand, one hundred forty-nine".