12053421 has 16 divisors (see below), whose sum is σ = 17915520. Its totient is φ = 8009280.

The previous prime is 12053411. The next prime is 12053423. The reversal of 12053421 is 12435021.

It is not a de Polignac number, because 12053421 - 2¹¹ = 12051373 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12053394 and 12053403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12053423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11176 + ... + 12206.

It is an arithmetic number, because the mean of its divisors is an integer number (1119720).

Almost surely, 2^12053421 is an apocalyptic number.

It is an amenable number.

12053421 is a deficient number, since it is larger than the sum of its proper divisors (5862099).

12053421 is a wasteful number, since it uses less digits than its factorization.

12053421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12053421 is about 3471.8037098891. The cubic root of 12053421 is about 229.2820777283.

Adding to 12053421 its reverse (12435021), we get a palindrome (24488442).

The spelling of 12053421 in words is "twelve million, fifty-three thousand, four hundred twenty-one".