1142645142 has 48 divisors (see below), whose sum is σ = 2430914112. Its totient is φ = 357991920.

The previous prime is 1142645131. The next prime is 1142645143. The reversal of 1142645142 is 2415462411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142645143) 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 23 ways as a sum of consecutive naturals, for example, 281733 + ... + 285759.

It is an arithmetic number, because the mean of its divisors is an integer number (50644044).

Almost surely, 2^1142645142 is an apocalyptic number.

1142645142 is an abundant number, since it is smaller than the sum of its proper divisors (1288268970).

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

1142645142 is a wasteful number, since it uses less digits than its factorization.

1142645142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201 (or 4182 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1142645142 is about 33803.0345087538. The cubic root of 1142645142 is about 1045.4512651560.

The spelling of 1142645142 in words is "one billion, one hundred forty-two million, six hundred forty-five thousand, one hundred forty-two".