123505454 has 4 divisors (see below), whose sum is σ = 185258184. Its totient is φ = 61752726.

The previous prime is 123505451. The next prime is 123505471. The reversal of 123505454 is 454505321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454505321 = 2719 ⋅167159.

It is a super-2 number, since 2×123505454² = 30507194335492232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123505451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30876362 + ... + 30876365.

It is an arithmetic number, because the mean of its divisors is an integer number (46314546).

Almost surely, 2^123505454 is an apocalyptic number.

123505454 is a deficient number, since it is larger than the sum of its proper divisors (61752730).

123505454 is an equidigital number, since it uses as much as digits as its factorization.

123505454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61752729.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 123505454 is about 11113.3007697983. The cubic root of 123505454 is about 497.9992768923. Note that the first 3 decimals are identical.

The spelling of 123505454 in words is "one hundred twenty-three million, five hundred five thousand, four hundred fifty-four".