21452126 has 8 divisors (see below), whose sum is σ = 32394600. Its totient is φ = 10653928.

The previous prime is 21452111. The next prime is 21452131. The reversal of 21452126 is 62125412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35696 + ... + 36291.

It is an arithmetic number, because the mean of its divisors is an integer number (4049325).

Almost surely, 2^21452126 is an apocalyptic number.

21452126 is a deficient number, since it is larger than the sum of its proper divisors (10942474).

21452126 is a wasteful number, since it uses less digits than its factorization.

21452126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72138.

The product of its digits is 960, while the sum is 23.

The square root of 21452126 is about 4631.6439845912. The cubic root of 21452126 is about 277.8583461344.

Adding to 21452126 its reverse (62125412), we get a palindrome (83577538).

The spelling of 21452126 in words is "twenty-one million, four hundred fifty-two thousand, one hundred twenty-six".