1253312040 has 32 divisors (see below), whose sum is σ = 3759936480. Its totient is φ = 334216512.

The previous prime is 1253312033. The next prime is 1253312059. The reversal of 1253312040 is 402133521.

It is a junction number, because it is equal to n+sod(n) for n = 1253311998 and 1253312016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5222014 + ... + 5222253.

It is an arithmetic number, because the mean of its divisors is an integer number (117498015).

Almost surely, 2^1253312040 is an apocalyptic number.

1253312040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253312040 is an abundant number, since it is smaller than the sum of its proper divisors (2506624440).

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

1253312040 is a wasteful number, since it uses less digits than its factorization.

1253312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444281 (or 10444277 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1253312040 is about 35402.1473924958. The cubic root of 1253312040 is about 1078.1679158048.

Adding to 1253312040 its reverse (402133521), we get a palindrome (1655445561).

The spelling of 1253312040 in words is "one billion, two hundred fifty-three million, three hundred twelve thousand, forty".