1252404492 has 12 divisors (see below), whose sum is σ = 2922277176. Its totient is φ = 417468160.

The previous prime is 1252404479. The next prime is 1252404499. The reversal of 1252404492 is 2944042521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1252404499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52183509 + ... + 52183532.

It is an arithmetic number, because the mean of its divisors is an integer number (243523098).

Almost surely, 2^1252404492 is an apocalyptic number.

1252404492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1252404492 is an abundant number, since it is smaller than the sum of its proper divisors (1669872684).

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

1252404492 is a wasteful number, since it uses less digits than its factorization.

1252404492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104367048 (or 104367046 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1252404492 is about 35389.3273742240. The cubic root of 1252404492 is about 1077.9076120708.

The spelling of 1252404492 in words is "one billion, two hundred fifty-two million, four hundred four thousand, four hundred ninety-two".