123251502241340 has 144 divisors (see below), whose sum is σ = 285398032958976. Its totient is φ = 44676997580160.

The previous prime is 123251502241333. The next prime is 123251502241367. The reversal of 123251502241340 is 43142205152321.

It is a self number, because there is not a number n which added to its sum of digits gives 123251502241340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1068878129 + ... + 1068993431.

Almost surely, 2^{123251502241340} is an apocalyptic number.

123251502241340 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 123251502241340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142699016479488).

123251502241340 is an abundant number, since it is smaller than the sum of its proper divisors (162146530717636).

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

123251502241340 is a wasteful number, since it uses less digits than its factorization.

123251502241340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116728 (or 116715 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 123251502241340 its reverse (43142205152321), we get a palindrome (166393707393661).

The spelling of 123251502241340 in words is "one hundred twenty-three trillion, two hundred fifty-one billion, five hundred two million, two hundred forty-one thousand, three hundred forty".