1142100043 has 4 divisors (see below), whose sum is σ = 1305257200. Its totient is φ = 978942888.

The previous prime is 1142100031. The next prime is 1142100073. The reversal of 1142100043 is 3400012411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1142100043 - 2²¹ = 1140002891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142100073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81578568 + ... + 81578581.

It is an arithmetic number, because the mean of its divisors is an integer number (326314300).

Almost surely, 2^1142100043 is an apocalyptic number.

1142100043 is a deficient number, since it is larger than the sum of its proper divisors (163157157).

1142100043 is an equidigital number, since it uses as much as digits as its factorization.

1142100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163157156.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1142100043 is about 33794.9706761228. The cubic root of 1142100043 is about 1045.2849944969.

Adding to 1142100043 its reverse (3400012411), we get a palindrome (4542112454).

The spelling of 1142100043 in words is "one billion, one hundred forty-two million, one hundred thousand, forty-three".