1142000520 has 64 divisors (see below), whose sum is σ = 3482187840. Its totient is φ = 299539200.

The previous prime is 1142000437. The next prime is 1142000527. The reversal of 1142000520 is 250002411.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1142000520.

It is not an unprimeable number, because it can be changed into a prime (1142000527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70686 + ... + 85325.

It is an arithmetic number, because the mean of its divisors is an integer number (54409185).

Almost surely, 2^1142000520 is an apocalyptic number.

1142000520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142000520 is an abundant number, since it is smaller than the sum of its proper divisors (2340187320).

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

1142000520 is a wasteful number, since it uses less digits than its factorization.

1142000520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156086 (or 156082 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1142000520 is about 33793.4981912202. The cubic root of 1142000520 is about 1045.2546314474.

Adding to 1142000520 its reverse (250002411), we get a palindrome (1392002931).

The spelling of 1142000520 in words is "one billion, one hundred forty-two million, five hundred twenty", and thus it is an aban number.