240402173 has 4 divisors (see below), whose sum is σ = 262256928. Its totient is φ = 218547420.

The previous prime is 240402163. The next prime is 240402221. The reversal of 240402173 is 371204042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240402173 - 2⁴ = 240402157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240402163) 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, 10927361 + ... + 10927382.

It is an arithmetic number, because the mean of its divisors is an integer number (65564232).

Almost surely, 2^240402173 is an apocalyptic number.

It is an amenable number.

240402173 is a deficient number, since it is larger than the sum of its proper divisors (21854755).

240402173 is a wasteful number, since it uses less digits than its factorization.

240402173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21854754.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 240402173 is about 15504.9080293951. The cubic root of 240402173 is about 621.7934310933.

The spelling of 240402173 in words is "two hundred forty million, four hundred two thousand, one hundred seventy-three".