123501056 has 80 divisors (see below), whose sum is σ = 298748736. Its totient is φ = 49790976.

The previous prime is 123501047. The next prime is 123501071. The reversal of 123501056 is 650105321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59915 + ... + 61941.

Almost surely, 2^123501056 is an apocalyptic number.

123501056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123501056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149374368).

123501056 is an abundant number, since it is smaller than the sum of its proper divisors (175247680).

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

123501056 is an equidigital number, since it uses as much as digits as its factorization.

123501056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 123501056 is about 11113.1028970311. The cubic root of 123501056 is about 497.9933656100.

Adding to 123501056 its reverse (650105321), we get a palindrome (773606377).

The spelling of 123501056 in words is "one hundred twenty-three million, five hundred one thousand, fifty-six".