120445731 has 64 divisors (see below), whose sum is σ = 227404800. Its totient is φ = 61337088.

The previous prime is 120445711. The next prime is 120445777. The reversal of 120445731 is 137544021.

120445731 is a `hidden beast` number, since 1 + 204 + 457 + 3 + 1 = 666.

It is not a de Polignac number, because 120445731 - 2⁶ = 120445667 is a prime.

It is a super-2 number, since 2×120445731² = 29014348232248722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 120445695 and 120445704.

It is not an unprimeable number, because it can be changed into a prime (120445711) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60061 + ... + 62033.

It is an arithmetic number, because the mean of its divisors is an integer number (3553200).

Almost surely, 2^120445731 is an apocalyptic number.

120445731 is a deficient number, since it is larger than the sum of its proper divisors (106959069).

120445731 is a wasteful number, since it uses less digits than its factorization.

120445731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 120445731 is about 10974.7770364596. Note that the first 3 decimals coincide. The cubic root of 120445731 is about 493.8523642701.

Adding to 120445731 its reverse (137544021), we get a palindrome (257989752).

The spelling of 120445731 in words is "one hundred twenty million, four hundred forty-five thousand, seven hundred thirty-one".