1142562281 has 16 divisors (see below), whose sum is σ = 1315353600. Its totient is φ = 972187920.

The previous prime is 1142562277. The next prime is 1142562341. The reversal of 1142562281 is 1822652411.

It is a cyclic number.

It is not a de Polignac number, because 1142562281 - 2² = 1142562277 is a prime.

It is a super-2 number, since 2×1142562281² = 2610897131927845922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142562251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961970 + ... + 963156.

It is an arithmetic number, because the mean of its divisors is an integer number (82209600).

Almost surely, 2^1142562281 is an apocalyptic number.

It is an amenable number.

1142562281 is a deficient number, since it is larger than the sum of its proper divisors (172791319).

1142562281 is a wasteful number, since it uses less digits than its factorization.

1142562281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084.

The product of its digits is 7680, while the sum is 32.

The square root of 1142562281 is about 33801.8088421315. The cubic root of 1142562281 is about 1045.4259936090.

The spelling of 1142562281 in words is "one billion, one hundred forty-two million, five hundred sixty-two thousand, two hundred eighty-one".