421364243 has 8 divisors (see below), whose sum is σ = 426528960. Its totient is φ = 416223360.

The previous prime is 421364233. The next prime is 421364269. The reversal of 421364243 is 342463124.

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 421364243 - 2¹⁶ = 421298707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421364233) 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, 30998 + ... + 42468.

It is an arithmetic number, because the mean of its divisors is an integer number (53316120).

Almost surely, 2^421364243 is an apocalyptic number.

421364243 is a deficient number, since it is larger than the sum of its proper divisors (5164717).

421364243 is a wasteful number, since it uses less digits than its factorization.

421364243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917.

The product of its digits is 13824, while the sum is 29.

The square root of 421364243 is about 20527.1586684568. The cubic root of 421364243 is about 749.6972069568.

The spelling of 421364243 in words is "four hundred twenty-one million, three hundred sixty-four thousand, two hundred forty-three".