242205405 has 32 divisors (see below), whose sum is σ = 418091520. Its totient is φ = 119024640.

The previous prime is 242205391. The next prime is 242205413. The reversal of 242205405 is 504502242.

It is a happy number.

It is not a de Polignac number, because 242205405 - 2¹⁶ = 242139869 is a prime.

It is a super-2 number, since 2×242205405² = 117326916422428050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196140 + ... + 197370.

It is an arithmetic number, because the mean of its divisors is an integer number (13065360).

Almost surely, 2^242205405 is an apocalyptic number.

It is an amenable number.

242205405 is a deficient number, since it is larger than the sum of its proper divisors (175886115).

242205405 is a wasteful number, since it uses less digits than its factorization.

242205405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 242205405 is about 15562.9497525373. The cubic root of 242205405 is about 623.3442296194.

Adding to 242205405 its reverse (504502242), we get a palindrome (746707647).

The spelling of 242205405 in words is "two hundred forty-two million, two hundred five thousand, four hundred five".