1421331242 has 8 divisors (see below), whose sum is σ = 2143908000. Its totient is φ = 706695244.

The previous prime is 1421331229. The next prime is 1421331251. The reversal of 1421331242 is 2421331241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984742 + ... + 1985457.

It is an arithmetic number, because the mean of its divisors is an integer number (267988500).

Almost surely, 2^1421331242 is an apocalyptic number.

1421331242 is a deficient number, since it is larger than the sum of its proper divisors (722576758).

1421331242 is a wasteful number, since it uses less digits than its factorization.

1421331242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970380.

The product of its digits is 1152, while the sum is 23.

The square root of 1421331242 is about 37700.5469721594. The cubic root of 1421331242 is about 1124.3419999424.

Adding to 1421331242 its reverse (2421331241), we get a palindrome (3842662483).

Subtracting 1421331242 from its reverse (2421331241), we obtain a palindrome (999999999).

The spelling of 1421331242 in words is "one billion, four hundred twenty-one million, three hundred thirty-one thousand, two hundred forty-two".