1224025642 has 16 divisors (see below), whose sum is σ = 2098809792. Its totient is φ = 524462400.

The previous prime is 1224025631. The next prime is 1224025709. The reversal of 1224025642 is 2465204221.

It is a self number, because there is not a number n which added to its sum of digits gives 1224025642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83538 + ... + 97090.

It is an arithmetic number, because the mean of its divisors is an integer number (131175612).

Almost surely, 2^1224025642 is an apocalyptic number.

1224025642 is a deficient number, since it is larger than the sum of its proper divisors (874784150).

1224025642 is a wasteful number, since it uses less digits than its factorization.

1224025642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20013.

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

The square root of 1224025642 is about 34986.0778310459. The cubic root of 1224025642 is about 1069.7037180081.

Adding to 1224025642 its reverse (2465204221), we get a palindrome (3689229863).

The spelling of 1224025642 in words is "one billion, two hundred twenty-four million, twenty-five thousand, six hundred forty-two".