123777960 has 32 divisors (see below), whose sum is σ = 371334240. Its totient is φ = 33007424.

The previous prime is 123777943. The next prime is 123777991. The reversal of 123777960 is 69777321.

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 7 ways as a sum of consecutive naturals, for example, 515622 + ... + 515861.

It is an arithmetic number, because the mean of its divisors is an integer number (11604195).

Almost surely, 2^123777960 is an apocalyptic number.

123777960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123777960 is an abundant number, since it is smaller than the sum of its proper divisors (247556280).

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

123777960 is a wasteful number, since it uses less digits than its factorization.

123777960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031497 (or 1031493 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 123777960 is about 11125.5543682102. The cubic root of 123777960 is about 498.3652745031.

It can be divided in two parts, 1237 and 77960, that added together give a palindrome (79197).

The spelling of 123777960 in words is "one hundred twenty-three million, seven hundred seventy-seven thousand, nine hundred sixty".