123530521152142 has 16 divisors (see below), whose sum is σ = 199551093753312. Its totient is φ = 57013575156000.

The previous prime is 123530521152119. The next prime is 123530521152179. The reversal of 123530521152142 is 241251125035321.

It is a happy number.

It is a super-2 number, since 2×123530521152142² (a number of 29 digits) contains 22 as substring.

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, 18352333 + ... + 24163384.

It is an arithmetic number, because the mean of its divisors is an integer number (12471943359582).

Almost surely, 2^{123530521152142} is an apocalyptic number.

123530521152142 is a deficient number, since it is larger than the sum of its proper divisors (76020572601170).

123530521152142 is a wasteful number, since it uses less digits than its factorization.

123530521152142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42627483.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 123530521152142 its reverse (241251125035321), we get a palindrome (364781646187463).

The spelling of 123530521152142 in words is "one hundred twenty-three trillion, five hundred thirty billion, five hundred twenty-one million, one hundred fifty-two thousand, one hundred forty-two".