1140142520 has 32 divisors (see below), whose sum is σ = 2798532720. Its totient is φ = 414597120.

The previous prime is 1140142501. The next prime is 1140142529. The reversal of 1140142520 is 252410411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1140142492 and 1140142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140142529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295177 + ... + 1296056.

Almost surely, 2^1140142520 is an apocalyptic number.

1140142520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140142520 is an abundant number, since it is smaller than the sum of its proper divisors (1658390200).

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

1140142520 is a wasteful number, since it uses less digits than its factorization.

1140142520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591255 (or 2591251 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1140142520 is about 33765.9965053602. The cubic root of 1140142520 is about 1044.6874579476.

Adding to 1140142520 its reverse (252410411), we get a palindrome (1392552931).

The spelling of 1140142520 in words is "one billion, one hundred forty million, one hundred forty-two thousand, five hundred twenty".