1421002442 has 16 divisors (see below), whose sum is σ = 2169885672. Its totient is φ = 697744320.

The previous prime is 1421002441. The next prime is 1421002469. The reversal of 1421002442 is 2442001241.

It can be written as a sum of positive squares in 4 ways, for example, as 915607081 + 505395361 = 30259^2 + 22481^2 .

It is not an unprimeable number, because it can be changed into a prime (1421002441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70748 + ... + 88584.

Almost surely, 2^1421002442 is an apocalyptic number.

1421002442 is a deficient number, since it is larger than the sum of its proper divisors (748883230).

1421002442 is a wasteful number, since it uses less digits than its factorization.

1421002442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18553.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1421002442 is about 37696.1860405002. The cubic root of 1421002442 is about 1124.2552943364.

Adding to 1421002442 its reverse (2442001241), we get a palindrome (3863003683).

The spelling of 1421002442 in words is "one billion, four hundred twenty-one million, two thousand, four hundred forty-two".