1253404012 has 48 divisors (see below), whose sum is σ = 2598543360. Its totient is φ = 517591872.

The previous prime is 1253404001. The next prime is 1253404043. The reversal of 1253404012 is 2104043521.

It is a super-2 number, since 2×1253404012² = 3142043234595392288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491613 + ... + 494155.

It is an arithmetic number, because the mean of its divisors is an integer number (54136320).

Almost surely, 2^1253404012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253404012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299271680).

1253404012 is an abundant number, since it is smaller than the sum of its proper divisors (1345139348).

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

1253404012 is a wasteful number, since it uses less digits than its factorization.

1253404012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190 (or 3188 counting only the distinct ones).

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

The square root of 1253404012 is about 35403.4463294183. The cubic root of 1253404012 is about 1078.1942882832.

Adding to 1253404012 its reverse (2104043521), we get a palindrome (3357447533).

The spelling of 1253404012 in words is "one billion, two hundred fifty-three million, four hundred four thousand, twelve".