1131420250 has 32 divisors (see below), whose sum is σ = 2128862736. Its totient is φ = 450251200.

The previous prime is 1131420197. The next prime is 1131420293. The reversal of 1131420250 is 520241311.

It can be written as a sum of positive squares in 8 ways, for example, as 295805601 + 835614649 = 17199^2 + 28907^2 .

It is a super-2 number, since 2×1131420250² = 2560223564220125000, which contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 37764 + ... + 60736.

Almost surely, 2^1131420250 is an apocalyptic number.

1131420250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131420250 is a deficient number, since it is larger than the sum of its proper divisors (997442486).

1131420250 is a wasteful number, since it uses less digits than its factorization.

1131420250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23187 (or 23177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1131420250 is about 33636.5909390354. The cubic root of 1131420250 is about 1042.0166276575.

Adding to 1131420250 its reverse (520241311), we get a palindrome (1651661561).

The spelling of 1131420250 in words is "one billion, one hundred thirty-one million, four hundred twenty thousand, two hundred fifty".