4212581 has 4 divisors (see below), whose sum is σ = 4310592. Its totient is φ = 4114572.

The previous prime is 4212577. The next prime is 4212587. The reversal of 4212581 is 1852124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4212581 - 2² = 4212577 is a prime.

It is a super-2 number, since 2×4212581² = 35491677363122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48941 + ... + 49026.

It is an arithmetic number, because the mean of its divisors is an integer number (1077648).

Almost surely, 2^4212581 is an apocalyptic number.

It is an amenable number.

4212581 is a deficient number, since it is larger than the sum of its proper divisors (98011).

4212581 is an equidigital number, since it uses as much as digits as its factorization.

4212581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98010.

The product of its digits is 640, while the sum is 23.

The square root of 4212581 is about 2052.4573077168. The cubic root of 4212581 is about 161.5038035828.

The spelling of 4212581 in words is "four million, two hundred twelve thousand, five hundred eighty-one".