1142111542 has 16 divisors (see below), whose sum is σ = 2012672592. Its totient is φ = 479207520.

The previous prime is 1142111513. The next prime is 1142111567. The reversal of 1142111542 is 2451112411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996413 + ... + 1996984.

It is an arithmetic number, because the mean of its divisors is an integer number (125792037).

Almost surely, 2^1142111542 is an apocalyptic number.

1142111542 is a deficient number, since it is larger than the sum of its proper divisors (870561050).

1142111542 is a wasteful number, since it uses less digits than its factorization.

1142111542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993423.

The product of its digits is 320, while the sum is 22.

The square root of 1142111542 is about 33795.1408045595. The cubic root of 1142111542 is about 1045.2885025643.

Adding to 1142111542 its reverse (2451112411), we get a palindrome (3593223953).

The spelling of 1142111542 in words is "one billion, one hundred forty-two million, one hundred eleven thousand, five hundred forty-two".