424040213 has 4 divisors (see below), whose sum is σ = 442476768. Its totient is φ = 405603660.

The previous prime is 424040147. The next prime is 424040237. The reversal of 424040213 is 312040424.

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 424040213 - 2¹⁴ = 424023829 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 (424040263) 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, 9218243 + ... + 9218288.

It is an arithmetic number, because the mean of its divisors is an integer number (110619192).

Almost surely, 2^424040213 is an apocalyptic number.

It is an amenable number.

424040213 is a deficient number, since it is larger than the sum of its proper divisors (18436555).

424040213 is a wasteful number, since it uses less digits than its factorization.

424040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18436554.

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

The square root of 424040213 is about 20592.2367167824. The cubic root of 424040213 is about 751.2809003323.

Adding to 424040213 its reverse (312040424), we get a palindrome (736080637).

The spelling of 424040213 in words is "four hundred twenty-four million, forty thousand, two hundred thirteen".