421200143 has 16 divisors (see below), whose sum is σ = 548896320. Its totient is φ = 313652736.

The previous prime is 421200139. The next prime is 421200161. The reversal of 421200143 is 341002124.

It is a cyclic number.

It is not a de Polignac number, because 421200143 - 2² = 421200139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421200343) 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, 134588 + ... + 137681.

It is an arithmetic number, because the mean of its divisors is an integer number (34306020).

Almost surely, 2^421200143 is an apocalyptic number.

421200143 is a deficient number, since it is larger than the sum of its proper divisors (127696177).

421200143 is a wasteful number, since it uses less digits than its factorization.

421200143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272306.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421200143 is about 20523.1611356535. The cubic root of 421200143 is about 749.5998713081.

Adding to 421200143 its reverse (341002124), we get a palindrome (762202267).

The spelling of 421200143 in words is "four hundred twenty-one million, two hundred thousand, one hundred forty-three".