11700421 has 4 divisors (see below), whose sum is σ = 11760012. Its totient is φ = 11640832.

The previous prime is 11700419. The next prime is 11700433. The reversal of 11700421 is 12400711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7756225 + 3944196 = 2785^2 + 1986^2 .

It is a cyclic number.

It is not a de Polignac number, because 11700421 - 2¹ = 11700419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11700395 and 11700404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11700401) 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, 29500 + ... + 29893.

It is an arithmetic number, because the mean of its divisors is an integer number (2940003).

Almost surely, 2^11700421 is an apocalyptic number.

It is an amenable number.

11700421 is a deficient number, since it is larger than the sum of its proper divisors (59591).

11700421 is an equidigital number, since it uses as much as digits as its factorization.

11700421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59590.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 11700421 is about 3420.5878149815. The cubic root of 11700421 is about 227.0215909651.

It can be divided in two parts, 11700 and 421, that added together give a palindrome (12121).

The spelling of 11700421 in words is "eleven million, seven hundred thousand, four hundred twenty-one".