1142102042 has 4 divisors (see below), whose sum is σ = 1713153066. Its totient is φ = 571051020.

The previous prime is 1142102029. The next prime is 1142102069. The reversal of 1142102042 is 2402012411.

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

It can be written as a sum of positive squares in only one way, i.e., 1016908321 + 125193721 = 31889^2 + 11189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1142102042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285525509 + ... + 285525512.

Almost surely, 2^1142102042 is an apocalyptic number.

1142102042 is a deficient number, since it is larger than the sum of its proper divisors (571051024).

1142102042 is an equidigital number, since it uses as much as digits as its factorization.

1142102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571051023.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1142102042 is about 33795.0002515165. Note that the first 3 decimals coincide. The cubic root of 1142102042 is about 1045.2856043452.

Subtracting from 1142102042 its sum of digits (17), we obtain a square (1142102025 = 33795²).

Adding to 1142102042 its reverse (2402012411), we get a palindrome (3544114453).

The spelling of 1142102042 in words is "one billion, one hundred forty-two million, one hundred two thousand, forty-two".