123776456 has 16 divisors (see below), whose sum is σ = 245732940. Its totient is φ = 58247680.

The previous prime is 123776453. The next prime is 123776461. The reversal of 123776456 is 654677321.

It can be written as a sum of positive squares in 2 ways, for example, as 117375556 + 6400900 = 10834^2 + 2530^2 .

It is a super-2 number, since 2×123776456² = 30641222119839872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123776453) 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 3 ways as a sum of consecutive naturals, for example, 454925 + ... + 455196.

Almost surely, 2^123776456 is an apocalyptic number.

It is an amenable number.

123776456 is a deficient number, since it is larger than the sum of its proper divisors (121956484).

123776456 is a wasteful number, since it uses less digits than its factorization.

123776456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910144 (or 910140 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 123776456 is about 11125.4867758674. The cubic root of 123776456 is about 498.3632559844.

The spelling of 123776456 in words is "one hundred twenty-three million, seven hundred seventy-six thousand, four hundred fifty-six".