123542424465 has 32 divisors (see below), whose sum is σ = 207961762176. Its totient is φ = 62544867840.

The previous prime is 123542424431. The next prime is 123542424479. The reversal of 123542424465 is 564424245321.

It is not a de Polignac number, because 123542424465 - 2⁷ = 123542424337 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2691867 + ... + 2737376.

It is an arithmetic number, because the mean of its divisors is an integer number (6498805068).

Almost surely, 2^123542424465 is an apocalyptic number.

123542424465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123542424465 is a deficient number, since it is larger than the sum of its proper divisors (84419337711).

123542424465 is a wasteful number, since it uses less digits than its factorization.

123542424465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429329.

The product of its digits is 921600, while the sum is 42.

Adding to 123542424465 its reverse (564424245321), we get a palindrome (687966669786).

The spelling of 123542424465 in words is "one hundred twenty-three billion, five hundred forty-two million, four hundred twenty-four thousand, four hundred sixty-five".