1252012426 has 32 divisors (see below), whose sum is σ = 2196518400. Its totient is φ = 535007088.

The previous prime is 1252012417. The next prime is 1252012441. The reversal of 1252012426 is 6242102521.

It is a super-2 number, since 2×1252012426² = 3135070229716810952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1252012426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249276 + ... + 254248.

It is an arithmetic number, because the mean of its divisors is an integer number (68641200).

Almost surely, 2^1252012426 is an apocalyptic number.

1252012426 is a deficient number, since it is larger than the sum of its proper divisors (944505974).

1252012426 is an equidigital number, since it uses as much as digits as its factorization.

1252012426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5349 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1252012426 is about 35383.7876152342. The cubic root of 1252012426 is about 1077.7951204501.

Adding to 1252012426 its reverse (6242102521), we get a palindrome (7494114947).

The spelling of 1252012426 in words is "one billion, two hundred fifty-two million, twelve thousand, four hundred twenty-six".