123454451 has 4 divisors (see below), whose sum is σ = 123477504. Its totient is φ = 123431400.

The previous prime is 123454439. The next prime is 123454453. The reversal of 123454451 is 154454321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123454451 - 2²² = 119260147 is a prime.

It is a super-2 number, since 2×123454451² = 30482002943422802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123454453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166 + ... + 15756.

It is an arithmetic number, because the mean of its divisors is an integer number (30869376).

Almost surely, 2^123454451 is an apocalyptic number.

123454451 is a deficient number, since it is larger than the sum of its proper divisors (23053).

123454451 is an equidigital number, since it uses as much as digits as its factorization.

123454451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23052.

The product of its digits is 9600, while the sum is 29.

The square root of 123454451 is about 11111.0058500570. The cubic root of 123454451 is about 497.9307159410.

The spelling of 123454451 in words is "one hundred twenty-three million, four hundred fifty-four thousand, four hundred fifty-one".