1142115642 has 24 divisors (see below), whose sum is σ = 2559915540. Its totient is φ = 367577280.

The previous prime is 1142115619. The next prime is 1142115659. The reversal of 1142115642 is 2465112411.

1142115642 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 1 + 15 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1121513121 + 20602521 = 33489^2 + 4539^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1093459 + ... + 1094502.

Almost surely, 2^1142115642 is an apocalyptic number.

1142115642 is an abundant number, since it is smaller than the sum of its proper divisors (1417799898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142115642 is a wasteful number, since it uses less digits than its factorization.

1142115642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187998 (or 2187995 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1142115642 is about 33795.2014641132. The cubic root of 1142115642 is about 1045.2897533696.

The spelling of 1142115642 in words is "one billion, one hundred forty-two million, one hundred fifteen thousand, six hundred forty-two".