3429421 has 4 divisors (see below), whose sum is σ = 3433212. Its totient is φ = 3425632.

The previous prime is 3429409. The next prime is 3429431. The reversal of 3429421 is 1249243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 1060900 = 1539^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 3429421 - 2⁵ = 3429389 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 4⁹ + 2³ + 9² + 4¹⁰ + 2¹⁹ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3429431) 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, 345 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (858303).

Almost surely, 2^3429421 is an apocalyptic number.

It is an amenable number.

3429421 is a deficient number, since it is larger than the sum of its proper divisors (3791).

3429421 is a wasteful number, since it uses less digits than its factorization.

3429421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790.

The product of its digits is 1728, while the sum is 25.

The square root of 3429421 is about 1851.8695958409. The cubic root of 3429421 is about 150.8019419901.

The spelling of 3429421 in words is "three million, four hundred twenty-nine thousand, four hundred twenty-one".