123256250 has 96 divisors (see below), whose sum is σ = 261826992. Its totient is φ = 43200000.

The previous prime is 123256247. The next prime is 123256253. The reversal of 123256250 is 52652321.

It is an interprime number because it is at equal distance from previous prime (123256247) and next prime (123256253).

It can be written as a sum of positive squares in 24 ways, for example, as 119268241 + 3988009 = 10921^2 + 1997^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123256253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3006230 + ... + 3006270.

Almost surely, 2^123256250 is an apocalyptic number.

123256250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123256250 is an abundant number, since it is smaller than the sum of its proper divisors (138570742).

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

123256250 is an equidigital number, since it uses as much as digits as its factorization.

123256250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 123256250 is about 11102.0831378620. The cubic root of 123256250 is about 497.6641041755.

The spelling of 123256250 in words is "one hundred twenty-three million, two hundred fifty-six thousand, two hundred fifty".