1142157512 has 16 divisors (see below), whose sum is σ = 2267518860. Its totient is φ = 537485824.

The previous prime is 1142157503. The next prime is 1142157539. The reversal of 1142157512 is 2157512411.

It can be written as a sum of positive squares in 2 ways, for example, as 1088076196 + 54081316 = 32986^2 + 7354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198973 + ... + 4199244.

Almost surely, 2^1142157512 is an apocalyptic number.

It is an amenable number.

1142157512 is a deficient number, since it is larger than the sum of its proper divisors (1125361348).

1142157512 is a wasteful number, since it uses less digits than its factorization.

1142157512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398240 (or 8398236 counting only the distinct ones).

The product of its digits is 2800, while the sum is 29.

The square root of 1142157512 is about 33795.8209250789. The cubic root of 1142157512 is about 1045.3025266667.

Adding to 1142157512 its reverse (2157512411), we get a palindrome (3299669923).

The spelling of 1142157512 in words is "one billion, one hundred forty-two million, one hundred fifty-seven thousand, five hundred twelve".