123250000 has 140 divisors (see below), whose sum is σ = 326948940. Its totient is φ = 44800000.

The previous prime is 123249991. The next prime is 123250007. The reversal of 123250000 is 52321.

It can be written as a sum of positive squares in 14 ways, for example, as 114746944 + 8503056 = 10712^2 + 2916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123250007) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4249986 + ... + 4250014.

Almost surely, 2^123250000 is an apocalyptic number.

123250000 is a gapful number since it is divisible by the number (10) 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 123250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163474470).

123250000 is an abundant number, since it is smaller than the sum of its proper divisors (203698940).

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

123250000 is an frugal number, since it uses more digits than its factorization.

123250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 123250000 is about 11101.8016555873. The cubic root of 123250000 is about 497.6556922878.

The spelling of 123250000 in words is "one hundred twenty-three million, two hundred fifty thousand".