421330012040143 has 4 divisors (see below), whose sum is σ = 421443608703880. Its totient is φ = 421216415376408.

The previous prime is 421330012040129. The next prime is 421330012040213. The reversal of 421330012040143 is 341040210033124.

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 421330012040143 - 2¹⁷ = 421330011909071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421330012040543) 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, 56798326305 + ... + 56798333722.

It is an arithmetic number, because the mean of its divisors is an integer number (105360902175970).

Almost surely, 2^{421330012040143} is an apocalyptic number.

421330012040143 is a deficient number, since it is larger than the sum of its proper divisors (113596663737).

421330012040143 is a wasteful number, since it uses less digits than its factorization.

421330012040143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113596663736.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 421330012040143 its reverse (341040210033124), we get a palindrome (762370222073267).

The spelling of 421330012040143 in words is "four hundred twenty-one trillion, three hundred thirty billion, twelve million, forty thousand, one hundred forty-three".