1224021442 has 32 divisors (see below), whose sum is σ = 2116985472. Its totient is φ = 519934464.

The previous prime is 1224021433. The next prime is 1224021443. The reversal of 1224021442 is 2441204221.

It is not an unprimeable number, because it can be changed into a prime (1224021443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1535388 + ... + 1536184.

It is an arithmetic number, because the mean of its divisors is an integer number (66155796).

Almost surely, 2^1224021442 is an apocalyptic number.

1224021442 is a deficient number, since it is larger than the sum of its proper divisors (892964030).

1224021442 is a wasteful number, since it uses less digits than its factorization.

1224021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1224021442 is about 34986.0178071183. The cubic root of 1224021442 is about 1069.7024945150.

Adding to 1224021442 its reverse (2441204221), we get a palindrome (3665225663).

The spelling of 1224021442 in words is "one billion, two hundred twenty-four million, twenty-one thousand, four hundred forty-two".