120772645 has 32 divisors (see below), whose sum is σ = 175438080. Its totient is φ = 77967360.

The previous prime is 120772643. The next prime is 120772651. The reversal of 120772645 is 546277021.

It is not a de Polignac number, because 120772645 - 2¹ = 120772643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120772645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120772643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127875 + ... + 128815.

It is an arithmetic number, because the mean of its divisors is an integer number (5482440).

Almost surely, 2^120772645 is an apocalyptic number.

It is an amenable number.

120772645 is a deficient number, since it is larger than the sum of its proper divisors (54665435).

120772645 is a wasteful number, since it uses less digits than its factorization.

120772645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 120772645 is about 10989.6608227916. The cubic root of 120772645 is about 494.2987656038.

The spelling of 120772645 in words is "one hundred twenty million, seven hundred seventy-two thousand, six hundred forty-five".