34213421 has 16 divisors (see below), whose sum is σ = 38233728. Its totient is φ = 30355200.

The previous prime is 34213391. The next prime is 34213441. The reversal of 34213421 is 12431243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34213421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34213393 and 34213402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34213441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109856 + ... + 110166.

It is an arithmetic number, because the mean of its divisors is an integer number (2389608).

Almost surely, 2^34213421 is an apocalyptic number.

It is an amenable number.

34213421 is a deficient number, since it is larger than the sum of its proper divisors (4020307).

34213421 is a wasteful number, since it uses less digits than its factorization.

34213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 576, while the sum is 20.

The square root of 34213421 is about 5849.2239656214. The cubic root of 34213421 is about 324.6376110611.

Adding to 34213421 its reverse (12431243), we get a palindrome (46644664).

The spelling of 34213421 in words is "thirty-four million, two hundred thirteen thousand, four hundred twenty-one".