123499964 has 24 divisors (see below), whose sum is σ = 251663328. Its totient is φ = 51929280.

The previous prime is 123499907. The next prime is 123499967. The reversal of 123499964 is 469994321.

It is a super-2 number, since 2×123499964² = 30504482216002592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123499967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40127 + ... + 43094.

It is an arithmetic number, because the mean of its divisors is an integer number (10485972).

Almost surely, 2^123499964 is an apocalyptic number.

123499964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123499964 is an abundant number, since it is smaller than the sum of its proper divisors (128163364).

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

123499964 is a wasteful number, since it uses less digits than its factorization.

123499964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83285 (or 83283 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 123499964 is about 11113.0537657297. The cubic root of 123499964 is about 497.9918978483.

The spelling of 123499964 in words is "one hundred twenty-three million, four hundred ninety-nine thousand, nine hundred sixty-four".