213089421 has 8 divisors (see below), whose sum is σ = 284288320. Its totient is φ = 141975072.

The previous prime is 213089329. The next prime is 213089431. The reversal of 213089421 is 124980312.

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

It is not a de Polignac number, because 213089421 - 2¹⁰ = 213088397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213089431) 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, 15001 + ... + 25518.

It is an arithmetic number, because the mean of its divisors is an integer number (35536040).

Almost surely, 2^213089421 is an apocalyptic number.

It is an amenable number.

213089421 is a deficient number, since it is larger than the sum of its proper divisors (71198899).

213089421 is a wasteful number, since it uses less digits than its factorization.

213089421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42275.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 213089421 is about 14597.5827108463. The cubic root of 213089421 is about 597.2928231376.

The spelling of 213089421 in words is "two hundred thirteen million, eighty-nine thousand, four hundred twenty-one".