34123021 has 4 divisors (see below), whose sum is σ = 34171200. Its totient is φ = 34074844.

The previous prime is 34123013. The next prime is 34123051. The reversal of 34123021 is 12032143.

It is a happy number.

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 34123021 - 2³ = 34123013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34122986 and 34123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34123051) 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, 23011 + ... + 24448.

It is an arithmetic number, because the mean of its divisors is an integer number (8542800).

Almost surely, 2^34123021 is an apocalyptic number.

It is an amenable number.

34123021 is a deficient number, since it is larger than the sum of its proper divisors (48179).

34123021 is an equidigital number, since it uses as much as digits as its factorization.

34123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48178.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 34123021 is about 5841.4913335552. The cubic root of 34123021 is about 324.3514355910.

Adding to 34123021 its reverse (12032143), we get a palindrome (46155164).

The spelling of 34123021 in words is "thirty-four million, one hundred twenty-three thousand, twenty-one".