123615042147 has 6 divisors (see below), whose sum is σ = 178555060892. Its totient is φ = 82410028092.

The previous prime is 123615042137. The next prime is 123615042149. The reversal of 123615042147 is 741240516321.

123615042147 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 1 + 504 + 2 + 147 = 666.

It is not a de Polignac number, because 123615042147 - 2²⁴ = 123598264931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123615042149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6867502333 + ... + 6867502350.

Almost surely, 2^123615042147 is an apocalyptic number.

123615042147 is a deficient number, since it is larger than the sum of its proper divisors (54940018745).

123615042147 is a wasteful number, since it uses less digits than its factorization.

123615042147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735004689 (or 13735004686 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 123615042147 its reverse (741240516321), we get a palindrome (864855558468).

The spelling of 123615042147 in words is "one hundred twenty-three billion, six hundred fifteen million, forty-two thousand, one hundred forty-seven".