1131944942 has 4 divisors (see below), whose sum is σ = 1697917416. Its totient is φ = 565972470.

The previous prime is 1131944911. The next prime is 1131944951. The reversal of 1131944942 is 2494491311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1131944896 and 1131944905.

It is a congruent 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 as a sum of consecutive naturals, namely, 282986234 + ... + 282986237.

It is an arithmetic number, because the mean of its divisors is an integer number (424479354).

Almost surely, 2^1131944942 is an apocalyptic number.

1131944942 is a deficient number, since it is larger than the sum of its proper divisors (565972474).

1131944942 is an equidigital number, since it uses as much as digits as its factorization.

1131944942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565972473.

The product of its digits is 31104, while the sum is 38.

The square root of 1131944942 is about 33644.3894579765. The cubic root of 1131944942 is about 1042.1776798967.

The spelling of 1131944942 in words is "one billion, one hundred thirty-one million, nine hundred forty-four thousand, nine hundred forty-two".