123742115095 has 4 divisors (see below), whose sum is σ = 148490538120. Its totient is φ = 98993692072.

The previous prime is 123742115089. The next prime is 123742115179. The reversal of 123742115095 is 590511247321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 590511247321 = 40163 ⋅14702867.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123742115095 is a prime.

It is a super-2 number, since 2×123742115095² (a number of 23 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 3 ways as a sum of consecutive naturals, for example, 12374211505 + ... + 12374211514.

It is an arithmetic number, because the mean of its divisors is an integer number (37122634530).

Almost surely, 2^123742115095 is an apocalyptic number.

123742115095 is a deficient number, since it is larger than the sum of its proper divisors (24748423025).

123742115095 is an equidigital number, since it uses as much as digits as its factorization.

123742115095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24748423024.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 123742115095 in words is "one hundred twenty-three billion, seven hundred forty-two million, one hundred fifteen thousand, ninety-five".