1142532972 has 48 divisors (see below), whose sum is σ = 3385285120. Its totient is φ = 326437776.

The previous prime is 1142532913. The next prime is 1142532973. The reversal of 1142532972 is 2792352411.

1142532972 is a `hidden beast` number, since 11 + 42 + 532 + 9 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1142532973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754888 + ... + 756399.

Almost surely, 2^1142532972 is an apocalyptic number.

1142532972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142532972 is an abundant number, since it is smaller than the sum of its proper divisors (2242752148).

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

1142532972 is a wasteful number, since it uses less digits than its factorization.

1142532972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511307 (or 1511299 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1142532972 is about 33801.3752974639. The cubic root of 1142532972 is about 1045.4170544457.

The spelling of 1142532972 in words is "one billion, one hundred forty-two million, five hundred thirty-two thousand, nine hundred seventy-two".