123445516 has 12 divisors (see below), whose sum is σ = 216327160. Its totient is φ = 61637760.

The previous prime is 123445507. The next prime is 123445571. The reversal of 123445516 is 615544321.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17925 + ... + 23836.

Almost surely, 2^123445516 is an apocalyptic number.

It is an amenable number.

123445516 is a deficient number, since it is larger than the sum of its proper divisors (92881644).

123445516 is a wasteful number, since it uses less digits than its factorization.

123445516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42504 (or 42502 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 123445516 is about 11110.6037639725. The cubic root of 123445516 is about 497.9187030941.

Adding to 123445516 its reverse (615544321), we get a palindrome (738989837).

The spelling of 123445516 in words is "one hundred twenty-three million, four hundred forty-five thousand, five hundred sixteen".