1200440252 has 12 divisors (see below), whose sum is σ = 2291749656. Its totient is φ = 545654640.

The previous prime is 1200440221. The next prime is 1200440317. The reversal of 1200440252 is 2520440021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13641323 + ... + 13641410.

It is an arithmetic number, because the mean of its divisors is an integer number (190979138).

Almost surely, 2^1200440252 is an apocalyptic number.

It is an amenable number.

1200440252 is a deficient number, since it is larger than the sum of its proper divisors (1091309404).

1200440252 is a wasteful number, since it uses less digits than its factorization.

1200440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27282748 (or 27282746 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1200440252 is about 34647.3700589237. The cubic root of 1200440252 is about 1062.7885081713.

Adding to 1200440252 its reverse (2520440021), we get a palindrome (3720880273).

The spelling of 1200440252 in words is "one billion, two hundred million, four hundred forty thousand, two hundred fifty-two".