4021400442 has 16 divisors (see below), whose sum is σ = 8087238432. Its totient is φ = 1333060560.

The previous prime is 4021400429. The next prime is 4021400479. The reversal of 4021400442 is 2440041204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850388 + ... + 1852559.

It is an arithmetic number, because the mean of its divisors is an integer number (505452402).

Almost surely, 2^4021400442 is an apocalyptic number.

4021400442 is an abundant number, since it is smaller than the sum of its proper divisors (4065837990).

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

4021400442 is a wasteful number, since it uses less digits than its factorization.

4021400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703133.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 4021400442 is about 63414.5128657471. The cubic root of 4021400442 is about 1590.2269420145.

Adding to 4021400442 its reverse (2440041204), we get a palindrome (6461441646).

The spelling of 4021400442 in words is "four billion, twenty-one million, four hundred thousand, four hundred forty-two".