123089961 has 8 divisors (see below), whose sum is σ = 172757920. Its totient is φ = 77740992.

The previous prime is 123089957. The next prime is 123089969. The reversal of 123089961 is 169980321.

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

It is not a de Polignac number, because 123089961 - 2² = 123089957 is a prime.

It is a super-2 number, since 2×123089961² = 30302276997963042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123089969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079680 + ... + 1079793.

It is an arithmetic number, because the mean of its divisors is an integer number (21594740).

Almost surely, 2^123089961 is an apocalyptic number.

It is an amenable number.

123089961 is a deficient number, since it is larger than the sum of its proper divisors (49667959).

123089961 is a wasteful number, since it uses less digits than its factorization.

123089961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159495.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 123089961 is about 11094.5915201958. The cubic root of 123089961 is about 497.4401985306.

The spelling of 123089961 in words is "one hundred twenty-three million, eighty-nine thousand, nine hundred sixty-one".