126400250 has 16 divisors (see below), whose sum is σ = 236621736. Its totient is φ = 50560000.

The previous prime is 126400247. The next prime is 126400273. The reversal of 126400250 is 52004621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19298449 + 107101801 = 4393^2 + 10349^2 .

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, 252551 + ... + 253050.

Almost surely, 2^126400250 is an apocalyptic number.

126400250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126400250 is a deficient number, since it is larger than the sum of its proper divisors (110221486).

126400250 is an equidigital number, since it uses as much as digits as its factorization.

126400250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505618 (or 505608 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 126400250 is about 11242.7865762897. The cubic root of 126400250 is about 501.8600716858.

Adding to 126400250 its reverse (52004621), we get a palindrome (178404871).

The spelling of 126400250 in words is "one hundred twenty-six million, four hundred thousand, two hundred fifty".