34021643 has 4 divisors (see below), whose sum is σ = 34812888. Its totient is φ = 33230400.

The previous prime is 34021619. The next prime is 34021657. The reversal of 34021643 is 34612043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34612043 = 1163 ⋅29761.

It is not a de Polignac number, because 34021643 - 2⁶ = 34021579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34020643) 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, 395558 + ... + 395643.

It is an arithmetic number, because the mean of its divisors is an integer number (8703222).

Almost surely, 2^34021643 is an apocalyptic number.

34021643 is a deficient number, since it is larger than the sum of its proper divisors (791245).

34021643 is an equidigital number, since it uses as much as digits as its factorization.

34021643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791244.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 34021643 is about 5832.8074715355. The cubic root of 34021643 is about 324.0299056631.

Adding to 34021643 its reverse (34612043), we get a palindrome (68633686).

The spelling of 34021643 in words is "thirty-four million, twenty-one thousand, six hundred forty-three".