123536650142 has 4 divisors (see below), whose sum is σ = 185304975216. Its totient is φ = 61768325070.

The previous prime is 123536650109. The next prime is 123536650177. The reversal of 123536650142 is 241056635321.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×123536650142² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123536650096 and 123536650105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30884162534 + ... + 30884162537.

It is an arithmetic number, because the mean of its divisors is an integer number (46326243804).

Almost surely, 2^123536650142 is an apocalyptic number.

123536650142 is a deficient number, since it is larger than the sum of its proper divisors (61768325074).

123536650142 is an equidigital number, since it uses as much as digits as its factorization.

123536650142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61768325073.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 123536650142 in words is "one hundred twenty-three billion, five hundred thirty-six million, six hundred fifty thousand, one hundred forty-two".