4021421402 has 8 divisors (see below), whose sum is σ = 6349612800. Its totient is φ = 1904883804.

The previous prime is 4021421351. The next prime is 4021421413. The reversal of 4021421402 is 2041241204.

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, 52913402 + ... + 52913477.

It is an arithmetic number, because the mean of its divisors is an integer number (793701600).

Almost surely, 2^4021421402 is an apocalyptic number.

4021421402 is a deficient number, since it is larger than the sum of its proper divisors (2328191398).

4021421402 is a wasteful number, since it uses less digits than its factorization.

4021421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105826900.

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

The square root of 4021421402 is about 63414.6781273862. The cubic root of 4021421402 is about 1590.2297048247.

Adding to 4021421402 its reverse (2041241204), we get a palindrome (6062662606).

It can be divided in two parts, 40214 and 21402, that added together give a palindrome (61616).

The spelling of 4021421402 in words is "four billion, twenty-one million, four hundred twenty-one thousand, four hundred two".