3423021 has 32 divisors (see below), whose sum is σ = 5744640. Its totient is φ = 1767744.

The previous prime is 3423011. The next prime is 3423023. The reversal of 3423021 is 1203243.

It is not a de Polignac number, because 3423021 - 2⁹ = 3422509 is a prime.

3423021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3423023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8991 + ... + 9363.

It is an arithmetic number, because the mean of its divisors is an integer number (179520).

Almost surely, 2^3423021 is an apocalyptic number.

It is an amenable number.

3423021 is a deficient number, since it is larger than the sum of its proper divisors (2321619).

3423021 is a wasteful number, since it uses less digits than its factorization.

3423021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3423021 is about 1850.1408054524. The cubic root of 3423021 is about 150.7080744995.

Adding to 3423021 its sum of digits (15), we get a triangular number (3423036 = T₂₆₁₆).

Adding to 3423021 its reverse (1203243), we get a palindrome (4626264).

The spelling of 3423021 in words is "three million, four hundred twenty-three thousand, twenty-one".