123161027 has 4 divisors (see below), whose sum is σ = 134357496. Its totient is φ = 111964560.

The previous prime is 123161023. The next prime is 123161033. The reversal of 123161027 is 720161321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123161027 - 2² = 123161023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123160993 and 123161011.

It is not an unprimeable number, because it can be changed into a prime (123161023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5598218 + ... + 5598239.

It is an arithmetic number, because the mean of its divisors is an integer number (33589374).

Almost surely, 2^123161027 is an apocalyptic number.

123161027 is a deficient number, since it is larger than the sum of its proper divisors (11196469).

123161027 is a wasteful number, since it uses less digits than its factorization.

123161027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11196468.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 123161027 is about 11097.7937897584. The cubic root of 123161027 is about 497.5359124939.

The spelling of 123161027 in words is "one hundred twenty-three million, one hundred sixty-one thousand, twenty-seven".