1242431452 has 6 divisors (see below), whose sum is σ = 2174255048. Its totient is φ = 621215724.

The previous prime is 1242431447. The next prime is 1242431461. The reversal of 1242431452 is 2541342421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242431452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155303928 + ... + 155303935.

Almost surely, 2^1242431452 is an apocalyptic number.

It is an amenable number.

1242431452 is a deficient number, since it is larger than the sum of its proper divisors (931823596).

1242431452 is a wasteful number, since it uses less digits than its factorization.

1242431452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310607867 (or 310607865 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 1242431452 is about 35248.1411141070. The cubic root of 1242431452 is about 1075.0388165540.

Adding to 1242431452 its reverse (2541342421), we get a palindrome (3783773873).

The spelling of 1242431452 in words is "one billion, two hundred forty-two million, four hundred thirty-one thousand, four hundred fifty-two".