1142534040 has 32 divisors (see below), whose sum is σ = 3427602480. Its totient is φ = 304675712.

The previous prime is 1142534027. The next prime is 1142534051. The reversal of 1142534040 is 404352411.

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 1142534040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760439 + ... + 4760678.

Almost surely, 2^1142534040 is an apocalyptic number.

1142534040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142534040 is an abundant number, since it is smaller than the sum of its proper divisors (2285068440).

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

1142534040 is a wasteful number, since it uses less digits than its factorization.

1142534040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521131 (or 9521127 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1142534040 is about 33801.3910956339. The cubic root of 1142534040 is about 1045.4173801854.

Adding to 1142534040 its reverse (404352411), we get a palindrome (1546886451).

The spelling of 1142534040 in words is "one billion, one hundred forty-two million, five hundred thirty-four thousand, forty".