123145677 has 20 divisors (see below), whose sum is σ = 185422336. Its totient is φ = 81443880.

The previous prime is 123145661. The next prime is 123145681. The reversal of 123145677 is 776541321.

It is a happy number.

It is not a de Polignac number, because 123145677 - 2⁴ = 123145661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123145877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4302 + ... + 16272.

Almost surely, 2^123145677 is an apocalyptic number.

It is an amenable number.

123145677 is a deficient number, since it is larger than the sum of its proper divisors (62276659).

123145677 is a wasteful number, since it uses less digits than its factorization.

123145677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12110 (or 12101 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 123145677 is about 11097.1021893105. The cubic root of 123145677 is about 497.5152417407.

Adding to 123145677 its reverse (776541321), we get a palindrome (899686998).

The spelling of 123145677 in words is "one hundred twenty-three million, one hundred forty-five thousand, six hundred seventy-seven".