123215043 has 16 divisors (see below), whose sum is σ = 187992320. Its totient is φ = 70320096.

The previous prime is 123215041. The next prime is 123215093. The reversal of 123215043 is 340512321.

It is not a de Polignac number, because 123215043 - 2¹ = 123215041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123215041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15813 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (11749520).

Almost surely, 2^123215043 is an apocalyptic number.

123215043 is a deficient number, since it is larger than the sum of its proper divisors (64777277).

123215043 is an equidigital number, since it uses as much as digits as its factorization.

123215043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7386.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123215043 is about 11100.2271598378. The cubic root of 123215043 is about 497.6086383459.

Adding to 123215043 its reverse (340512321), we get a palindrome (463727364).

The spelling of 123215043 in words is "one hundred twenty-three million, two hundred fifteen thousand, forty-three".