242220455 has 16 divisors (see below), whose sum is σ = 306568800. Its totient is φ = 183214080.

The previous prime is 242220431. The next prime is 242220467. The reversal of 242220455 is 554022242.

It is not a de Polignac number, because 242220455 - 2¹⁴ = 242204071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51815 + ... + 56295.

It is an arithmetic number, because the mean of its divisors is an integer number (19160550).

Almost surely, 2^242220455 is an apocalyptic number.

242220455 is a deficient number, since it is larger than the sum of its proper divisors (64348345).

242220455 is a wasteful number, since it uses less digits than its factorization.

242220455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 242220455 is about 15563.4332651893. The cubic root of 242220455 is about 623.3571403365.

Adding to 242220455 its reverse (554022242), we get a palindrome (796242697).

The spelling of 242220455 in words is "two hundred forty-two million, two hundred twenty thousand, four hundred fifty-five".