1142523128 has 16 divisors (see below), whose sum is σ = 2174205480. Its totient is φ = 562735008.

The previous prime is 1142523127. The next prime is 1142523139. The reversal of 1142523128 is 8213252411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142523128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142523127) 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, 1065251 + ... + 1066322.

Almost surely, 2^1142523128 is an apocalyptic number.

It is an amenable number.

1142523128 is a deficient number, since it is larger than the sum of its proper divisors (1031682352).

1142523128 is a wasteful number, since it uses less digits than its factorization.

1142523128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131646 (or 2131642 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1142523128 is about 33801.2296817734. The cubic root of 1142523128 is about 1045.4140520188.

Adding to 1142523128 its reverse (8213252411), we get a palindrome (9355775539).

The spelling of 1142523128 in words is "one billion, one hundred forty-two million, five hundred twenty-three thousand, one hundred twenty-eight".