4021243421342 has 32 divisors (see below), whose sum is σ = 6906502326528. Its totient is φ = 1720155519936.

The previous prime is 4021243421341. The next prime is 4021243421353. The reversal of 4021243421342 is 2431243421204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4021243421299 and 4021243421308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021243421341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51051953 + ... + 51130659.

It is an arithmetic number, because the mean of its divisors is an integer number (215828197704).

Almost surely, 2^{4021243421342} is an apocalyptic number.

4021243421342 is a deficient number, since it is larger than the sum of its proper divisors (2885258905186).

4021243421342 is a wasteful number, since it uses less digits than its factorization.

4021243421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85520.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 4021243421342 its reverse (2431243421204), we get a palindrome (6452486842546).

The spelling of 4021243421342 in words is "four trillion, twenty-one billion, two hundred forty-three million, four hundred twenty-one thousand, three hundred forty-two".