1142469888 has 144 divisors (see below), whose sum is σ = 3546748800. Its totient is φ = 326344704.

The previous prime is 1142469871. The next prime is 1142469907. The reversal of 1142469888 is 8889642411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142469888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261256 + ... + 265592.

It is an arithmetic number, because the mean of its divisors is an integer number (24630200).

Almost surely, 2^1142469888 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 1142469888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773374400).

1142469888 is an abundant number, since it is smaller than the sum of its proper divisors (2404278912).

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

1142469888 is an frugal number, since it uses more digits than its factorization.

1142469888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377 (or 4349 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 1142469888 is about 33800.4421272859. The cubic root of 1142469888 is about 1045.3978134829.

The spelling of 1142469888 in words is "one billion, one hundred forty-two million, four hundred sixty-nine thousand, eight hundred eighty-eight".