1142515081 has 8 divisors (see below), whose sum is σ = 1147235040. Its totient is φ = 1137805728.

The previous prime is 1142515079. The next prime is 1142515123. The reversal of 1142515081 is 1805152411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142515081 - 2¹ = 1142515079 is a prime.

It is a super-2 number, since 2×1142515081² = 2610681420624873122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142515051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266130 + ... + 270388.

It is an arithmetic number, because the mean of its divisors is an integer number (143404380).

Almost surely, 2^1142515081 is an apocalyptic number.

It is an amenable number.

1142515081 is a deficient number, since it is larger than the sum of its proper divisors (4719959).

1142515081 is an equidigital number, since it uses as much as digits as its factorization.

1142515081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 1142515081 is about 33801.1106474329. The cubic root of 1142515081 is about 1045.4115976654.

Adding to 1142515081 its reverse (1805152411), we get a palindrome (2947667492).

The spelling of 1142515081 in words is "one billion, one hundred forty-two million, five hundred fifteen thousand, eighty-one".