1012561235 has 12 divisors (see below), whose sum is σ = 1413453168. Its totient is φ = 694327536.

The previous prime is 1012561219. The next prime is 1012561261. The reversal of 1012561235 is 5321652101.

It is not a de Polignac number, because 1012561235 - 2⁴ = 1012561219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2066207 + ... + 2066696.

It is an arithmetic number, because the mean of its divisors is an integer number (117787764).

Almost surely, 2^1012561235 is an apocalyptic number.

1012561235 is a deficient number, since it is larger than the sum of its proper divisors (400891933).

1012561235 is an equidigital number, since it uses as much as digits as its factorization.

1012561235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132922 (or 4132915 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1012561235 is about 31820.7673540410. The cubic root of 1012561235 is about 1004.1696680370.

The spelling of 1012561235 in words is "one billion, twelve million, five hundred sixty-one thousand, two hundred thirty-five".