120142251 has 16 divisors (see below), whose sum is σ = 180136320. Its totient is φ = 79128360.

The previous prime is 120142249. The next prime is 120142277. The reversal of 120142251 is 152241021.

It is not a de Polignac number, because 120142251 - 2¹ = 120142249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120142201) 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, 24565 + ... + 29046.

It is an arithmetic number, because the mean of its divisors is an integer number (11258520).

Almost surely, 2^120142251 is an apocalyptic number.

120142251 is a deficient number, since it is larger than the sum of its proper divisors (59994069).

120142251 is an equidigital number, since it uses as much as digits as its factorization.

120142251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53703 (or 53697 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 120142251 is about 10960.9420671765. The cubic root of 120142251 is about 493.4372385333.

Adding to 120142251 its reverse (152241021), we get a palindrome (272383272).

The spelling of 120142251 in words is "one hundred twenty million, one hundred forty-two thousand, two hundred fifty-one".