120242451 has 16 divisors (see below), whose sum is σ = 183547904. Its totient is φ = 68589504.

The previous prime is 120242443. The next prime is 120242477. The reversal of 120242451 is 154242021.

It is not a de Polignac number, because 120242451 - 2³ = 120242443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120242401) 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, 8031 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (11471744).

Almost surely, 2^120242451 is an apocalyptic number.

120242451 is a deficient number, since it is larger than the sum of its proper divisors (63305453).

120242451 is an equidigital number, since it uses as much as digits as its factorization.

120242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 120242451 is about 10965.5118895563. The cubic root of 120242451 is about 493.5743778330.

Adding to 120242451 its reverse (154242021), we get a palindrome (274484472).

The spelling of 120242451 in words is "one hundred twenty million, two hundred forty-two thousand, four hundred fifty-one".