21374126 has 8 divisors (see below), whose sum is σ = 33748680. Its totient is φ = 10124568.

The previous prime is 21374113. The next prime is 21374147. The reversal of 21374126 is 62147312.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21374095 and 21374104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281201 + ... + 281276.

It is an arithmetic number, because the mean of its divisors is an integer number (4218585).

Almost surely, 2^21374126 is an apocalyptic number.

21374126 is a deficient number, since it is larger than the sum of its proper divisors (12374554).

21374126 is a wasteful number, since it uses less digits than its factorization.

21374126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562498.

The product of its digits is 2016, while the sum is 26.

The square root of 21374126 is about 4623.2159802458. The cubic root of 21374126 is about 277.5211725317.

The spelling of 21374126 in words is "twenty-one million, three hundred seventy-four thousand, one hundred twenty-six".