11421426 has 16 divisors (see below), whose sum is σ = 22899744. Its totient is φ = 3797664.

The previous prime is 11421401. The next prime is 11421437. The reversal of 11421426 is 62412411.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510 + ... + 4806.

It is an arithmetic number, because the mean of its divisors is an integer number (1431234).

Almost surely, 2^11421426 is an apocalyptic number.

11421426 is an abundant number, since it is smaller than the sum of its proper divisors (11478318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11421426 is a wasteful number, since it uses less digits than its factorization.

11421426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745.

The product of its digits is 384, while the sum is 21.

The square root of 11421426 is about 3379.5600305365. The cubic root of 11421426 is about 225.2026224131.

Adding to 11421426 its product of digits (384), we get a triangular number (11421810 = T₄₇₇₉).

Adding to 11421426 its reverse (62412411), we get a palindrome (73833837).

The spelling of 11421426 in words is "eleven million, four hundred twenty-one thousand, four hundred twenty-six".