120129453 has 8 divisors (see below), whose sum is σ = 177969600. Its totient is φ = 80086284.

The previous prime is 120129389. The next prime is 120129461. The reversal of 120129453 is 354921021.

120129453 is a `hidden beast` number, since 1 + 201 + 2 + 9 + 453 = 666.

It is not a de Polignac number, because 120129453 - 2⁶ = 120129389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4449239 = 120129453 / (1 + 2 + 0 + 1 + 2 + 9 + 4 + 5 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120129473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224593 + ... + 2224646.

It is an arithmetic number, because the mean of its divisors is an integer number (22246200).

Almost surely, 2^120129453 is an apocalyptic number.

It is an amenable number.

120129453 is a deficient number, since it is larger than the sum of its proper divisors (57840147).

120129453 is an equidigital number, since it uses as much as digits as its factorization.

120129453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449248 (or 4449242 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 120129453 is about 10960.3582514442. The cubic root of 120129453 is about 493.4197169870.

The spelling of 120129453 in words is "one hundred twenty million, one hundred twenty-nine thousand, four hundred fifty-three".