420122143 has 8 divisors (see below), whose sum is σ = 490355712. Its totient is φ = 352442616.

The previous prime is 420122141. The next prime is 420122191. The reversal of 420122143 is 341221024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420122143 - 2¹ = 420122141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420122143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420122141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638155 + ... + 638812.

It is an arithmetic number, because the mean of its divisors is an integer number (61294464).

Almost surely, 2^420122143 is an apocalyptic number.

420122143 is a deficient number, since it is larger than the sum of its proper divisors (70233569).

420122143 is a wasteful number, since it uses less digits than its factorization.

420122143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277021.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 420122143 is about 20496.8812993587. The cubic root of 420122143 is about 748.9598279824.

Adding to 420122143 its reverse (341221024), we get a palindrome (761343167).

The spelling of 420122143 in words is "four hundred twenty million, one hundred twenty-two thousand, one hundred forty-three".