421220013442143 has 4 divisors (see below), whose sum is σ = 561626684589528. Its totient is φ = 280813342294760.

The previous prime is 421220013442117. The next prime is 421220013442153. The reversal of 421220013442143 is 341244310022124.

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 421220013442143 - 2¹² = 421220013438047 is a prime.

It is a super-2 number, since 2×421220013442143² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421220013442153) 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, 70203335573688 + ... + 70203335573693.

It is an arithmetic number, because the mean of its divisors is an integer number (140406671147382).

Almost surely, 2^{421220013442143} is an apocalyptic number.

421220013442143 is a deficient number, since it is larger than the sum of its proper divisors (140406671147385).

421220013442143 is a wasteful number, since it uses less digits than its factorization.

421220013442143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140406671147384.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 421220013442143 its reverse (341244310022124), we get a palindrome (762464323464267).

The spelling of 421220013442143 in words is "four hundred twenty-one trillion, two hundred twenty billion, thirteen million, four hundred forty-two thousand, one hundred forty-three".