123161976 has 96 divisors (see below), whose sum is σ = 390149760. Its totient is φ = 34364736.

The previous prime is 123161963. The next prime is 123161981. The reversal of 123161976 is 679161321.

123161976 is a `hidden beast` number, since 1 + 2 + 31 + 619 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123161976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18831 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (4064060).

Almost surely, 2^123161976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123161976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195074880).

123161976 is an abundant number, since it is smaller than the sum of its proper divisors (266987784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123161976 is a wasteful number, since it uses less digits than its factorization.

123161976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745 (or 5738 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 123161976 is about 11097.8365459219. The cubic root of 123161976 is about 497.5371903883.

The spelling of 123161976 in words is "one hundred twenty-three million, one hundred sixty-one thousand, nine hundred seventy-six".