1142575408 has 80 divisors (see below), whose sum is σ = 2478278880. Its totient is φ = 506677248.

The previous prime is 1142575391. The next prime is 1142575451. The reversal of 1142575408 is 8045752411.

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, 1851516 + ... + 1852132.

It is an arithmetic number, because the mean of its divisors is an integer number (30978486).

Almost surely, 2^1142575408 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 1142575408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239139440).

1142575408 is an abundant number, since it is smaller than the sum of its proper divisors (1335703472).

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

1142575408 is a wasteful number, since it uses less digits than its factorization.

1142575408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 1142575408 is about 33802.0030175728. The cubic root of 1142575408 is about 1045.4299972578.

The spelling of 1142575408 in words is "one billion, one hundred forty-two million, five hundred seventy-five thousand, four hundred eight".