116421805 has 8 divisors (see below), whose sum is σ = 144523800. Its totient is φ = 89925696.

The previous prime is 116421793. The next prime is 116421817. The reversal of 116421805 is 508124611.

It is an interprime number because it is at equal distance from previous prime (116421793) and next prime (116421817).

It can be written as a sum of positive squares in 4 ways, for example, as 191844 + 116229961 = 438^2 + 10781^2 .

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 116421805 - 2⁹ = 116421293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401310 + ... + 401599.

It is an arithmetic number, because the mean of its divisors is an integer number (18065475).

Almost surely, 2^116421805 is an apocalyptic number.

It is an amenable number.

116421805 is a deficient number, since it is larger than the sum of its proper divisors (28101995).

116421805 is an equidigital number, since it uses as much as digits as its factorization.

116421805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802943.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 116421805 is about 10789.8936510051. The cubic root of 116421805 is about 488.2903139647.

The spelling of 116421805 in words is "one hundred sixteen million, four hundred twenty-one thousand, eight hundred five".