1142395648 has 144 divisors (see below), whose sum is σ = 2566904256. Its totient is φ = 504627200.

The previous prime is 1142395633. The next prime is 1142395673. The reversal of 1142395648 is 8465932411.

Its product of digits (207360) is a multiple of the sum of its prime divisors (256).

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, 10109640 + ... + 10109752.

It is an arithmetic number, because the mean of its divisors is an integer number (17825724).

Almost surely, 2^1142395648 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 1142395648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283452128).

1142395648 is an abundant number, since it is smaller than the sum of its proper divisors (1424508608).

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

1142395648 is a wasteful number, since it uses less digits than its factorization.

1142395648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 256 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 1142395648 is about 33799.3438989576. The cubic root of 1142395648 is about 1045.3751689721.

The spelling of 1142395648 in words is "one billion, one hundred forty-two million, three hundred ninety-five thousand, six hundred forty-eight".