11421943 has 8 divisors (see below), whose sum is σ = 13024368. Its totient is φ = 9922944.

The previous prime is 11421913. The next prime is 11421947. The reversal of 11421943 is 34912411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11421943 - 2¹³ = 11413751 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 (11421947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25621 + ... + 26062.

It is an arithmetic number, because the mean of its divisors is an integer number (1628046).

Almost surely, 2^11421943 is an apocalyptic number.

11421943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11421943 is a deficient number, since it is larger than the sum of its proper divisors (1602425).

11421943 is a wasteful number, since it uses less digits than its factorization.

11421943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51713.

The product of its digits is 864, while the sum is 25.

The square root of 11421943 is about 3379.6365189174. The cubic root of 11421943 is about 225.2060203542.

The spelling of 11421943 in words is "eleven million, four hundred twenty-one thousand, nine hundred forty-three".