1253122240 has 56 divisors (see below), whose sum is σ = 3034619280. Its totient is φ = 492745728.

The previous prime is 1253122229. The next prime is 1253122259. The reversal of 1253122240 is 422213521.

It is a happy 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, 14307 + ... + 52066.

It is an arithmetic number, because the mean of its divisors is an integer number (54189630).

Almost surely, 2^1253122240 is an apocalyptic number.

1253122240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253122240 is an abundant number, since it is smaller than the sum of its proper divisors (1781497040).

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

1253122240 is an equidigital number, since it uses as much as digits as its factorization.

1253122240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66449 (or 66439 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1253122240 is about 35399.4666626490. The cubic root of 1253122240 is about 1078.1134875925.

Adding to 1253122240 its reverse (422213521), we get a palindrome (1675335761).

The spelling of 1253122240 in words is "one billion, two hundred fifty-three million, one hundred twenty-two thousand, two hundred forty".