1142871944 has 8 divisors (see below), whose sum is σ = 2142884910. Its totient is φ = 571435968.

The previous prime is 1142871941. The next prime is 1142871953. The reversal of 1142871944 is 4491782411.

It can be written as a sum of positive squares in only one way, i.e., 1131515044 + 11356900 = 33638^2 + 3370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1142871941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71429489 + ... + 71429504.

Almost surely, 2^1142871944 is an apocalyptic number.

It is an amenable number.

1142871944 is a deficient number, since it is larger than the sum of its proper divisors (1000012966).

1142871944 is a wasteful number, since it uses less digits than its factorization.

1142871944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142858999 (or 142858995 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 1142871944 is about 33806.3891002869. The cubic root of 1142871944 is about 1045.5204306222.

The spelling of 1142871944 in words is "one billion, one hundred forty-two million, eight hundred seventy-one thousand, nine hundred forty-four".