1230440252 has 6 divisors (see below), whose sum is σ = 2153270448. Its totient is φ = 615220124.

The previous prime is 1230440149. The next prime is 1230440257. The reversal of 1230440252 is 2520440321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230440257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153805028 + ... + 153805035.

It is an arithmetic number, because the mean of its divisors is an integer number (358878408).

Almost surely, 2^1230440252 is an apocalyptic number.

It is an amenable number.

1230440252 is a deficient number, since it is larger than the sum of its proper divisors (922830196).

1230440252 is a wasteful number, since it uses less digits than its factorization.

1230440252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307610067 (or 307610065 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1230440252 is about 35077.6317900739. The cubic root of 1230440252 is about 1071.5690875483.

Adding to 1230440252 its reverse (2520440321), we get a palindrome (3750880573).

The spelling of 1230440252 in words is "one billion, two hundred thirty million, four hundred forty thousand, two hundred fifty-two".