1143549442 has 8 divisors (see below), whose sum is σ = 1960370496. Its totient is φ = 490092612.

The previous prime is 1143549427. The next prime is 1143549461. The reversal of 1143549442 is 2449453411.

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

It is a super-2 number, since 2×1143549442² = 2615410652597022728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40841038 + ... + 40841065.

It is an arithmetic number, because the mean of its divisors is an integer number (245046312).

Almost surely, 2^1143549442 is an apocalyptic number.

1143549442 is a deficient number, since it is larger than the sum of its proper divisors (816821054).

1143549442 is an equidigital number, since it uses as much as digits as its factorization.

1143549442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81682112.

The product of its digits is 69120, while the sum is 37.

The square root of 1143549442 is about 33816.4078813821. The cubic root of 1143549442 is about 1045.7269857199.

The spelling of 1143549442 in words is "one billion, one hundred forty-three million, five hundred forty-nine thousand, four hundred forty-two".