34236421 has 4 divisors (see below), whose sum is σ = 34648992. Its totient is φ = 33823852.

The previous prime is 34236407. The next prime is 34236427. The reversal of 34236421 is 12463243.

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 a de Polignac number, because none of the positive numbers 2^k-34236421 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 (34236427) 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, 206161 + ... + 206326.

It is an arithmetic number, because the mean of its divisors is an integer number (8662248).

Almost surely, 2^34236421 is an apocalyptic number.

It is an amenable number.

34236421 is a deficient number, since it is larger than the sum of its proper divisors (412571).

34236421 is an equidigital number, since it uses as much as digits as its factorization.

34236421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412570.

The product of its digits is 3456, while the sum is 25.

The square root of 34236421 is about 5851.1897080850. The cubic root of 34236421 is about 324.7103407318.

Adding to 34236421 its reverse (12463243), we get a palindrome (46699664).

It can be divided in two parts, 342 and 36421, that added together give a palindrome (36763).

The spelling of 34236421 in words is "thirty-four million, two hundred thirty-six thousand, four hundred twenty-one".