4021401340442 has 16 divisors (see below), whose sum is σ = 6389779156992. Its totient is φ = 1891580422080.

The previous prime is 4021401340403. The next prime is 4021401340447. The reversal of 4021401340442 is 2440431041204.

It is not an unprimeable number, because it can be changed into a prime (4021401340447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26289434 + ... + 26441957.

It is an arithmetic number, because the mean of its divisors is an integer number (399361197312).

Almost surely, 2^{4021401340442} is an apocalyptic number.

4021401340442 is a deficient number, since it is larger than the sum of its proper divisors (2368377816550).

4021401340442 is a wasteful number, since it uses less digits than its factorization.

4021401340442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52733653.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 4021401340442 its reverse (2440431041204), we get a palindrome (6461832381646).

The spelling of 4021401340442 in words is "four trillion, twenty-one billion, four hundred one million, three hundred forty thousand, four hundred forty-two".