120123451 has 6 divisors (see below), whose sum is σ = 139735500. Its totient is φ = 102962916.

The previous prime is 120123431. The next prime is 120123461. The reversal of 120123451 is 154321021.

It is not a de Polignac number, because 120123451 - 2¹⁹ = 119599163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120123431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225701 + ... + 1225798.

It is an arithmetic number, because the mean of its divisors is an integer number (23289250).

Almost surely, 2^120123451 is an apocalyptic number.

120123451 is a deficient number, since it is larger than the sum of its proper divisors (19612049).

120123451 is an equidigital number, since it uses as much as digits as its factorization.

120123451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451513 (or 2451506 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120123451 is about 10960.0844431054. The cubic root of 120123451 is about 493.4114993119.

Adding to 120123451 its reverse (154321021), we get a palindrome (274444472).

The spelling of 120123451 in words is "one hundred twenty million, one hundred twenty-three thousand, four hundred fifty-one".