123742115135 has 8 divisors (see below), whose sum is σ = 148575546096. Its totient is φ = 98937020160.

The previous prime is 123742115089. The next prime is 123742115179. The reversal of 123742115135 is 531511247321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123742115135 - 2¹² = 123742111039 is a prime.

It is a super-2 number, since 2×123742115135² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123742115095 and 123742115104.

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, 7074386 + ... + 7091855.

It is an arithmetic number, because the mean of its divisors is an integer number (18571943262).

Almost surely, 2^123742115135 is an apocalyptic number.

123742115135 is a deficient number, since it is larger than the sum of its proper divisors (24833430961).

123742115135 is a wasteful number, since it uses less digits than its factorization.

123742115135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14167993.

The product of its digits is 25200, while the sum is 35.

The spelling of 123742115135 in words is "one hundred twenty-three billion, seven hundred forty-two million, one hundred fifteen thousand, one hundred thirty-five".