242220534 has 8 divisors (see below), whose sum is σ = 484441080. Its totient is φ = 80740176.

The previous prime is 242220491. The next prime is 242220571. The reversal of 242220534 is 435022242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

242220534 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20185039 + ... + 20185050.

It is an arithmetic number, because the mean of its divisors is an integer number (60555135).

Almost surely, 2^242220534 is an apocalyptic number.

242220534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242220534 is a wasteful number, since it uses less digits than its factorization.

242220534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40370094.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 242220534 is about 15563.4358031895. The cubic root of 242220534 is about 623.3572081056.

Adding to 242220534 its reverse (435022242), we get a palindrome (677242776).

The spelling of 242220534 in words is "two hundred forty-two million, two hundred twenty thousand, five hundred thirty-four".