123280984 has 8 divisors (see below), whose sum is σ = 231151860. Its totient is φ = 61640488.

The previous prime is 123280981. The next prime is 123281027. The reversal of 123280984 is 489082321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123280981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7705054 + ... + 7705069.

Almost surely, 2^123280984 is an apocalyptic number.

It is an amenable number.

123280984 is a deficient number, since it is larger than the sum of its proper divisors (107870876).

123280984 is a wasteful number, since it uses less digits than its factorization.

123280984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410129 (or 15410125 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 123280984 is about 11103.1970170758. The cubic root of 123280984 is about 497.6973909275.

The spelling of 123280984 in words is "one hundred twenty-three million, two hundred eighty thousand, nine hundred eighty-four".