123144140775 has 12 divisors (see below), whose sum is σ = 203598312872. Its totient is φ = 65676875040.

The previous prime is 123144140767. The next prime is 123144140783. The reversal of 123144140775 is 577041441321.

It is an interprime number because it is at equal distance from previous prime (123144140767) and next prime (123144140783).

It is not a de Polignac number, because 123144140775 - 2³ = 123144140767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820960864 + ... + 820961013.

Almost surely, 2^123144140775 is an apocalyptic number.

123144140775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123144140775 is a deficient number, since it is larger than the sum of its proper divisors (80454172097).

123144140775 is a wasteful number, since it uses less digits than its factorization.

123144140775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641921890 (or 1641921885 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 123144140775 in words is "one hundred twenty-three billion, one hundred forty-four million, one hundred forty thousand, seven hundred seventy-five".