1142530720 has 24 divisors (see below), whose sum is σ = 2699229204. Its totient is φ = 457012224.

The previous prime is 1142530717. The next prime is 1142530729. The reversal of 1142530720 is 270352411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1137847824 + 4682896 = 33732^2 + 2164^2 .

It is a super-2 number, since 2×1142530720² = 2610752892287436800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142530729) 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, 3570249 + ... + 3570568.

Almost surely, 2^1142530720 is an apocalyptic number.

1142530720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142530720 is an abundant number, since it is smaller than the sum of its proper divisors (1556698484).

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

1142530720 is an equidigital number, since it uses as much as digits as its factorization.

1142530720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140832 (or 7140824 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1142530720 is about 33801.3419851934. The cubic root of 1142530720 is about 1045.4163675856.

The spelling of 1142530720 in words is "one billion, one hundred forty-two million, five hundred thirty thousand, seven hundred twenty".