123026142455340 has 96 divisors (see below), whose sum is σ = 347013380980224. Its totient is φ = 32565084802560.

The previous prime is 123026142455339. The next prime is 123026142455347. The reversal of 123026142455340 is 43554241620321.

It is a super-2 number, since 2×123026142455340² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123026142455292 and 123026142455301.

It is not an unprimeable number, because it can be changed into a prime (123026142455347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111464785 + ... + 112563095.

It is an arithmetic number, because the mean of its divisors is an integer number (3614722718544).

Almost surely, 2^{123026142455340} is an apocalyptic number.

123026142455340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123026142455340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173506690490112).

123026142455340 is an abundant number, since it is smaller than the sum of its proper divisors (223987238524884).

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

123026142455340 is a wasteful number, since it uses less digits than its factorization.

123026142455340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112087 (or 1112085 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 123026142455340 in words is "one hundred twenty-three trillion, twenty-six billion, one hundred forty-two million, four hundred fifty-five thousand, three hundred forty".