123454156205423 has 8 divisors (see below), whose sum is σ = 123954257305440. Its totient is φ = 122954486045440.

The previous prime is 123454156205411. The next prime is 123454156205477. The reversal of 123454156205423 is 324502651454321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123454156205423 - 2⁴ = 123454156205407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123454156205323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107160890 + ... + 108306807.

It is an arithmetic number, because the mean of its divisors is an integer number (15494282163180).

Almost surely, 2^{123454156205423} is an apocalyptic number.

123454156205423 is a deficient number, since it is larger than the sum of its proper divisors (500101100017).

123454156205423 is a wasteful number, since it uses less digits than its factorization.

123454156205423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215470017.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 123454156205423 in words is "one hundred twenty-three trillion, four hundred fifty-four billion, one hundred fifty-six million, two hundred five thousand, four hundred twenty-three".