1142000231 has 4 divisors (see below), whose sum is σ = 1150216200. Its totient is φ = 1133784264.

The previous prime is 1142000203. The next prime is 1142000257. The reversal of 1142000231 is 1320002411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142000231 is a prime.

It is a super-2 number, since 2×1142000231² = 2608329055208106722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142000731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4107776 + ... + 4108053.

It is an arithmetic number, because the mean of its divisors is an integer number (287554050).

Almost surely, 2^1142000231 is an apocalyptic number.

1142000231 is a deficient number, since it is larger than the sum of its proper divisors (8215969).

1142000231 is an equidigital number, since it uses as much as digits as its factorization.

1142000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215968.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1142000231 is about 33793.4939152494. The cubic root of 1142000231 is about 1045.2545432750.

Adding to 1142000231 its reverse (1320002411), we get a palindrome (2462002642).

The spelling of 1142000231 in words is "one billion, one hundred forty-two million, two hundred thirty-one", and thus it is an aban number.