1142501280 has 96 divisors (see below), whose sum is σ = 3715020288. Its totient is φ = 294835200.

The previous prime is 1142501221. The next prime is 1142501309. The reversal of 1142501280 is 821052411.

It is a tau number, because it is divible by the number of its divisors (96).

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 1142501280.

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, 23511 + ... + 53270.

It is an arithmetic number, because the mean of its divisors is an integer number (38698128).

Almost surely, 2^1142501280 is an apocalyptic number.

1142501280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142501280 is an abundant number, since it is smaller than the sum of its proper divisors (2572519008).

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

1142501280 is a wasteful number, since it uses less digits than its factorization.

1142501280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76830 (or 76822 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1142501280 is about 33800.9064967199. The cubic root of 1142501280 is about 1045.4073883020.

Adding to 1142501280 its reverse (821052411), we get a palindrome (1963553691).

The spelling of 1142501280 in words is "one billion, one hundred forty-two million, five hundred one thousand, two hundred eighty".