243333442 has 32 divisors (see below), whose sum is σ = 412086528. Its totient is φ = 106800000.

The previous prime is 243333439. The next prime is 243333449. The reversal of 243333442 is 244333342.

It is a super-2 number, since 2×243333442² = 118422327991134728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243333442.

It is not an unprimeable number, because it can be changed into a prime (243333449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89767 + ... + 92437.

It is an arithmetic number, because the mean of its divisors is an integer number (12877704).

Almost surely, 2^243333442 is an apocalyptic number.

243333442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243333442 is a deficient number, since it is larger than the sum of its proper divisors (168753086).

243333442 is a wasteful number, since it uses less digits than its factorization.

243333442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826.

The product of its digits is 20736, while the sum is 28.

The square root of 243333442 is about 15599.1487588266. The cubic root of 243333442 is about 624.3104433384.

Adding to 243333442 its reverse (244333342), we get a palindrome (487666784).

The spelling of 243333442 in words is "two hundred forty-three million, three hundred thirty-three thousand, four hundred forty-two".