1142864523 has 12 divisors (see below), whose sum is σ = 1656944640. Its totient is φ = 759075696.

The previous prime is 1142864521. The next prime is 1142864537. The reversal of 1142864523 is 3254682411.

It is a happy number.

1142864523 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 8 + 645 + 2 + 3 = 666.

It is not a de Polignac number, because 1142864523 - 2¹ = 1142864521 is a prime.

It is a super-2 number, since 2×1142864523² = 2612278635864035058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142864521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233611 + ... + 238452.

It is an arithmetic number, because the mean of its divisors is an integer number (138078720).

Almost surely, 2^1142864523 is an apocalyptic number.

1142864523 is a deficient number, since it is larger than the sum of its proper divisors (514080117).

1142864523 is a wasteful number, since it uses less digits than its factorization.

1142864523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472338 (or 472335 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1142864523 is about 33806.2793427493. The cubic root of 1142864523 is about 1045.5181676612.

The spelling of 1142864523 in words is "one billion, one hundred forty-two million, eight hundred sixty-four thousand, five hundred twenty-three".