42021401223443 has 4 divisors (see below), whose sum is σ = 42021664406568. Its totient is φ = 42021138040320.

The previous prime is 42021401223437. The next prime is 42021401223463. The reversal of 42021401223443 is 34432210412024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42021401223443 - 2⁸ = 42021401223187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42021401223463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131351918 + ... + 131671443.

It is an arithmetic number, because the mean of its divisors is an integer number (10505416101642).

Almost surely, 2^{42021401223443} is an apocalyptic number.

42021401223443 is a deficient number, since it is larger than the sum of its proper divisors (263183125).

42021401223443 is a wasteful number, since it uses less digits than its factorization.

42021401223443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263183124.

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

Adding to 42021401223443 its reverse (34432210412024), we get a palindrome (76453611635467).

The spelling of 42021401223443 in words is "forty-two trillion, twenty-one billion, four hundred one million, two hundred twenty-three thousand, four hundred forty-three".