1252047939 has 8 divisors (see below), whose sum is σ = 1671933120. Its totient is φ = 833430696.

The previous prime is 1252047917. The next prime is 1252047949. The reversal of 1252047939 is 9397402521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252047939 - 2¹¹ = 1252045891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252047939.

It is not an unprimeable number, because it can be changed into a prime (1252047949) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 314677 + ... + 318630.

It is an arithmetic number, because the mean of its divisors is an integer number (208991640).

Almost surely, 2^1252047939 is an apocalyptic number.

1252047939 is a deficient number, since it is larger than the sum of its proper divisors (419885181).

1252047939 is an equidigital number, since it uses as much as digits as its factorization.

1252047939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633969.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1252047939 is about 35384.2894375456. The cubic root of 1252047939 is about 1077.8053108112.

The spelling of 1252047939 in words is "one billion, two hundred fifty-two million, forty-seven thousand, nine hundred thirty-nine".