123458272842 has 8 divisors (see below), whose sum is σ = 246916545696. Its totient is φ = 41152757612.

The previous prime is 123458272783. The next prime is 123458272843. The reversal of 123458272842 is 248272854321.

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

123458272842 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 123458272791 and 123458272800.

It is not an unprimeable number, because it can be changed into a prime (123458272843) 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, 10288189398 + ... + 10288189409.

It is an arithmetic number, because the mean of its divisors is an integer number (30864568212).

Almost surely, 2^123458272842 is an apocalyptic number.

123458272842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123458272842 is a wasteful number, since it uses less digits than its factorization.

123458272842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20576378812.

The product of its digits is 1720320, while the sum is 48.

The spelling of 123458272842 in words is "one hundred twenty-three billion, four hundred fifty-eight million, two hundred seventy-two thousand, eight hundred forty-two".