1275250126 has 4 divisors (see below), whose sum is σ = 1912875192. Its totient is φ = 637625062.

The previous prime is 1275250057. The next prime is 1275250133. The reversal of 1275250126 is 6210525721.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 318812530 + ... + 318812533.

It is an arithmetic number, because the mean of its divisors is an integer number (478218798).

Almost surely, 2^1275250126 is an apocalyptic number.

1275250126 is a deficient number, since it is larger than the sum of its proper divisors (637625066).

1275250126 is an equidigital number, since it uses as much as digits as its factorization.

1275250126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637625065.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1275250126 is about 35710.6444355181. The cubic root of 1275250126 is about 1084.4223463519.

Adding to 1275250126 its reverse (6210525721), we get a palindrome (7485775847).

The spelling of 1275250126 in words is "one billion, two hundred seventy-five million, two hundred fifty thousand, one hundred twenty-six".