243220142 has 16 divisors (see below), whose sum is σ = 398252592. Its totient is φ = 110483520.

The previous prime is 243220099. The next prime is 243220189. The reversal of 243220142 is 241022342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48128 + ... + 52940.

It is an arithmetic number, because the mean of its divisors is an integer number (24890787).

Almost surely, 2^243220142 is an apocalyptic number.

243220142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243220142 is a deficient number, since it is larger than the sum of its proper divisors (155032450).

243220142 is a wasteful number, since it uses less digits than its factorization.

243220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243220142 is about 15595.5167275727. The cubic root of 243220142 is about 624.2135319372.

Adding to 243220142 its reverse (241022342), we get a palindrome (484242484).

The spelling of 243220142 in words is "two hundred forty-three million, two hundred twenty thousand, one hundred forty-two".