421202243 has 32 divisors (see below), whose sum is σ = 560812032. Its totient is φ = 306583200.

The previous prime is 421202237. The next prime is 421202263. The reversal of 421202243 is 342202124.

It is not a de Polignac number, because 421202243 - 2⁸ = 421201987 is a prime.

It is a super-2 number, since 2×421202243² = 354822659016462098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421202213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73388 + ... + 78918.

It is an arithmetic number, because the mean of its divisors is an integer number (17525376).

Almost surely, 2^421202243 is an apocalyptic number.

421202243 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

421202243 is a deficient number, since it is larger than the sum of its proper divisors (139609789).

421202243 is a wasteful number, since it uses less digits than its factorization.

421202243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 421202243 is about 20523.2122972989. The cubic root of 421202243 is about 749.6011170793.

Adding to 421202243 its reverse (342202124), we get a palindrome (763404367).

The spelling of 421202243 in words is "four hundred twenty-one million, two hundred two thousand, two hundred forty-three".