1142134440 has 64 divisors (see below), whose sum is σ = 3429907200. Its totient is φ = 304257792.

The previous prime is 1142134423. The next prime is 1142134459. The reversal of 1142134440 is 444312411.

It is a super-2 number, since 2×1142134440² = 2608942158068227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1142134440.

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, 128046 + ... + 136674.

It is an arithmetic number, because the mean of its divisors is an integer number (53592300).

Almost surely, 2^1142134440 is an apocalyptic number.

1142134440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142134440 is an abundant number, since it is smaller than the sum of its proper divisors (2287772760).

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

1142134440 is a wasteful number, since it uses less digits than its factorization.

1142134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746 (or 9742 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1142134440 is about 33795.4795793757. The cubic root of 1142134440 is about 1045.2954881214.

Adding to 1142134440 its reverse (444312411), we get a palindrome (1586446851).

The spelling of 1142134440 in words is "one billion, one hundred forty-two million, one hundred thirty-four thousand, four hundred forty".