1421042216 has 16 divisors (see below), whose sum is σ = 2906677440. Its totient is φ = 645928240.

The previous prime is 1421042197. The next prime is 1421042221. The reversal of 1421042216 is 6122401241.

It is a junction number, because it is equal to n+sod(n) for n = 1421042191 and 1421042200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8074016 + ... + 8074191.

It is an arithmetic number, because the mean of its divisors is an integer number (181667340).

Almost surely, 2^1421042216 is an apocalyptic number.

It is an amenable number.

1421042216 is an abundant number, since it is smaller than the sum of its proper divisors (1485635224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421042216 is a wasteful number, since it uses less digits than its factorization.

1421042216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16148224 (or 16148220 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1421042216 is about 37696.7135968111. The cubic root of 1421042216 is about 1124.2657835778.

Adding to 1421042216 its reverse (6122401241), we get a palindrome (7543443457).

The spelling of 1421042216 in words is "one billion, four hundred twenty-one million, forty-two thousand, two hundred sixteen".