123777460 has 12 divisors (see below), whose sum is σ = 259932708. Its totient is φ = 49510976.

The previous prime is 123777377. The next prime is 123777491. The reversal of 123777460 is 64777321.

It can be written as a sum of positive squares in 2 ways, for example, as 17522596 + 106254864 = 4186^2 + 10308^2 .

It is a congruent 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, 3094417 + ... + 3094456.

It is an arithmetic number, because the mean of its divisors is an integer number (21661059).

Almost surely, 2^123777460 is an apocalyptic number.

123777460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123777460 is an abundant number, since it is smaller than the sum of its proper divisors (136155248).

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

123777460 is a wasteful number, since it uses less digits than its factorization.

123777460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188882 (or 6188880 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 123777460 is about 11125.5318973971. The cubic root of 123777460 is about 498.3646034548.

The spelling of 123777460 in words is "one hundred twenty-three million, seven hundred seventy-seven thousand, four hundred sixty".