14142421 has 4 divisors (see below), whose sum is σ = 14157792. Its totient is φ = 14127052.

The previous prime is 14142413. The next prime is 14142431. The reversal of 14142421 is 12424141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12424141 = 3167 ⋅3923.

It is a cyclic number.

It is not a de Polignac number, because 14142421 - 2³ = 14142413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14142431) 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, 6211 + ... + 8176.

It is an arithmetic number, because the mean of its divisors is an integer number (3539448).

Almost surely, 2^14142421 is an apocalyptic number.

It is an amenable number.

14142421 is a deficient number, since it is larger than the sum of its proper divisors (15371).

14142421 is an equidigital number, since it uses as much as digits as its factorization.

14142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15370.

The product of its digits is 256, while the sum is 19.

The square root of 14142421 is about 3760.6410357810. The cubic root of 14142421 is about 241.8287441231.

Adding to 14142421 its reverse (12424141), we get a palindrome (26566562).

The spelling of 14142421 in words is "fourteen million, one hundred forty-two thousand, four hundred twenty-one".