123102204152540 has 24 divisors (see below), whose sum is σ = 273721371586992. Its totient is φ = 46344359210240.

The previous prime is 123102204152533. The next prime is 123102204152563. The reversal of 123102204152540 is 45251402201321.

It is a junction number, because it is equal to n+sod(n) for n = 123102204152497 and 123102204152506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181032652826 + ... + 181032653505.

It is an arithmetic number, because the mean of its divisors is an integer number (11405057149458).

Almost surely, 2^{123102204152540} is an apocalyptic number.

123102204152540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123102204152540 is an abundant number, since it is smaller than the sum of its proper divisors (150619167434452).

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

123102204152540 is a wasteful number, since it uses less digits than its factorization.

123102204152540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362065306357 (or 362065306355 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 123102204152540 its reverse (45251402201321), we get a palindrome (168353606353861).

The spelling of 123102204152540 in words is "one hundred twenty-three trillion, one hundred two billion, two hundred four million, one hundred fifty-two thousand, five hundred forty".