1142615488 has 56 divisors (see below), whose sum is σ = 2595741824. Its totient is φ = 488851200.

The previous prime is 1142615381. The next prime is 1142615489. The reversal of 1142615488 is 8845162411.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 1142615488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142615489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307723 + ... + 311413.

Almost surely, 2^1142615488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142615488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297870912).

1142615488 is an abundant number, since it is smaller than the sum of its proper divisors (1453126336).

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

1142615488 is an equidigital number, since it uses as much as digits as its factorization.

1142615488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401 (or 4391 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 1142615488 is about 33802.5958766483. The cubic root of 1142615488 is about 1045.4422212050.

Adding to 1142615488 its reverse (8845162411), we get a palindrome (9987777899).

The spelling of 1142615488 in words is "one billion, one hundred forty-two million, six hundred fifteen thousand, four hundred eighty-eight".