1235143652 has 12 divisors (see below), whose sum is σ = 2166017280. Its totient is φ = 616281576.

The previous prime is 1235143627. The next prime is 1235143661. The reversal of 1235143652 is 2563415321.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 320408 + ... + 324239.

It is an arithmetic number, because the mean of its divisors is an integer number (180501440).

Almost surely, 2^1235143652 is an apocalyptic number.

It is an amenable number.

1235143652 is a deficient number, since it is larger than the sum of its proper divisors (930873628).

1235143652 is a wasteful number, since it uses less digits than its factorization.

1235143652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645130 (or 645128 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 1235143652 is about 35144.6105683361. The cubic root of 1235143652 is about 1072.9327213535.

Adding to 1235143652 its reverse (2563415321), we get a palindrome (3798558973).

The spelling of 1235143652 in words is "one billion, two hundred thirty-five million, one hundred forty-three thousand, six hundred fifty-two".