123154454 has 4 divisors (see below), whose sum is σ = 184731684. Its totient is φ = 61577226.

The previous prime is 123154441. The next prime is 123154459. The reversal of 123154454 is 454451321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123154459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30788612 + ... + 30788615.

It is an arithmetic number, because the mean of its divisors is an integer number (46182921).

Almost surely, 2^123154454 is an apocalyptic number.

123154454 is a deficient number, since it is larger than the sum of its proper divisors (61577230).

123154454 is an equidigital number, since it uses as much as digits as its factorization.

123154454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61577229.

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

The square root of 123154454 is about 11097.4976458659. The cubic root of 123154454 is about 497.5270613126.

The spelling of 123154454 in words is "one hundred twenty-three million, one hundred fifty-four thousand, four hundred fifty-four".