1131420442 has 8 divisors (see below), whose sum is σ = 1755652500. Its totient is φ = 546202944.

The previous prime is 1131420419. The next prime is 1131420443. The reversal of 1131420442 is 2440241311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1055015361 + 76405081 = 32481^2 + 8741^2 .

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

It is a super-2 number, since 2×1131420442² = 2560224433150950728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131420443) 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 3 ways as a sum of consecutive naturals, for example, 9753567 + ... + 9753682.

Almost surely, 2^1131420442 is an apocalyptic number.

1131420442 is a deficient number, since it is larger than the sum of its proper divisors (624232058).

1131420442 is a wasteful number, since it uses less digits than its factorization.

1131420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19507280.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1131420442 is about 33636.5937930701. The cubic root of 1131420442 is about 1042.0166866003.

Adding to 1131420442 its reverse (2440241311), we get a palindrome (3571661753).

The spelling of 1131420442 in words is "one billion, one hundred thirty-one million, four hundred twenty thousand, four hundred forty-two".