4293421 has 16 divisors (see below), whose sum is σ = 4973760. Its totient is φ = 3669120.

The previous prime is 4293389. The next prime is 4293437. The reversal of 4293421 is 1243924.

It is a cyclic number.

It is not a de Polignac number, because 4293421 - 2⁵ = 4293389 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 2 + 9² + 3⁶ + 4¹¹ + 2¹⁵ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4293451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13561 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (310860).

Almost surely, 2^4293421 is an apocalyptic number.

It is an amenable number.

4293421 is a deficient number, since it is larger than the sum of its proper divisors (680339).

4293421 is a wasteful number, since it uses less digits than its factorization.

4293421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

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

The square root of 4293421 is about 2072.0571903304. The cubic root of 4293421 is about 162.5303580363.

The spelling of 4293421 in words is "four million, two hundred ninety-three thousand, four hundred twenty-one".