1142113643 has 4 divisors (see below), whose sum is σ = 1245942168. Its totient is φ = 1038285120.

The previous prime is 1142113603. The next prime is 1142113657. The reversal of 1142113643 is 3463112411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463112411 = 11 ⋅314828401.

It is a cyclic number.

It is not a de Polignac number, because 1142113643 - 2¹⁸ = 1141851499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142113603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51914246 + ... + 51914267.

It is an arithmetic number, because the mean of its divisors is an integer number (311485542).

Almost surely, 2^1142113643 is an apocalyptic number.

1142113643 is a deficient number, since it is larger than the sum of its proper divisors (103828525).

1142113643 is a wasteful number, since it uses less digits than its factorization.

1142113643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103828524.

The product of its digits is 1728, while the sum is 26.

The square root of 1142113643 is about 33795.1718888956. The cubic root of 1142113643 is about 1045.2891435261.

The spelling of 1142113643 in words is "one billion, one hundred forty-two million, one hundred thirteen thousand, six hundred forty-three".