1243425452 has 6 divisors (see below), whose sum is σ = 2175994548. Its totient is φ = 621712724.

The previous prime is 1243425437. The next prime is 1243425479. The reversal of 1243425452 is 2545243421.

It is a super-2 number, since 2×1243425452² = 3092213709362808608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155428178 + ... + 155428185.

It is an arithmetic number, because the mean of its divisors is an integer number (362665758).

Almost surely, 2^1243425452 is an apocalyptic number.

It is an amenable number.

1243425452 is a deficient number, since it is larger than the sum of its proper divisors (932569096).

1243425452 is a wasteful number, since it uses less digits than its factorization.

1243425452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310856367 (or 310856365 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 1243425452 is about 35262.2383294084. The cubic root of 1243425452 is about 1075.3254329668.

Adding to 1243425452 its reverse (2545243421), we get a palindrome (3788668873).

The spelling of 1243425452 in words is "one billion, two hundred forty-three million, four hundred twenty-five thousand, four hundred fifty-two".