240006155 has 4 divisors (see below), whose sum is σ = 288007392. Its totient is φ = 192004920.

The previous prime is 240006131. The next prime is 240006191. The reversal of 240006155 is 551600042.

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

It is not a de Polignac number, because 240006155 - 2²⁴ = 223228939 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 240006155.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24000611 + ... + 24000620.

It is an arithmetic number, because the mean of its divisors is an integer number (72001848).

Almost surely, 2^240006155 is an apocalyptic number.

240006155 is a deficient number, since it is larger than the sum of its proper divisors (48001237).

240006155 is an equidigital number, since it uses as much as digits as its factorization.

240006155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48001236.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 240006155 is about 15492.1320353268. The cubic root of 240006155 is about 621.4518136498.

Adding to 240006155 its reverse (551600042), we get a palindrome (791606197).

The spelling of 240006155 in words is "two hundred forty million, six thousand, one hundred fifty-five".