36400123 has 4 divisors (see below), whose sum is σ = 36775480. Its totient is φ = 36024768.

The previous prime is 36400121. The next prime is 36400141. The reversal of 36400123 is 32100463.

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

It is a cyclic number.

It is not a de Polignac number, because 36400123 - 2¹ = 36400121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36400123.

It is not an unprimeable number, because it can be changed into a prime (36400121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187533 + ... + 187726.

It is an arithmetic number, because the mean of its divisors is an integer number (9193870).

Almost surely, 2^36400123 is an apocalyptic number.

36400123 is a deficient number, since it is larger than the sum of its proper divisors (375357).

36400123 is an equidigital number, since it uses as much as digits as its factorization.

36400123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375356.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 36400123 is about 6033.2514451165. The cubic root of 36400123 is about 331.4115325611.

Adding to 36400123 its reverse (32100463), we get a palindrome (68500586).

The spelling of 36400123 in words is "thirty-six million, four hundred thousand, one hundred twenty-three".