421200231 has 4 divisors (see below), whose sum is σ = 561600312. Its totient is φ = 280800152.

The previous prime is 421200223. The next prime is 421200251. The reversal of 421200231 is 132002124.

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 421200231 - 2³ = 421200223 is a prime.

It is a super-2 number, since 2×421200231² = 354819269188906722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421200231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421200251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70200036 + ... + 70200041.

It is an arithmetic number, because the mean of its divisors is an integer number (140400078).

Almost surely, 2^421200231 is an apocalyptic number.

421200231 is a deficient number, since it is larger than the sum of its proper divisors (140400081).

421200231 is a wasteful number, since it uses less digits than its factorization.

421200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140400080.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 421200231 is about 20523.1632795727. The cubic root of 421200231 is about 749.5999235119.

Adding to 421200231 its reverse (132002124), we get a palindrome (553202355).

The spelling of 421200231 in words is "four hundred twenty-one million, two hundred thousand, two hundred thirty-one".