242221040 has 20 divisors (see below), whose sum is σ = 563164104. Its totient is φ = 96888384.

The previous prime is 242220991. The next prime is 242221051. The reversal of 242221040 is 40122242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

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, 1513802 + ... + 1513961.

Almost surely, 2^242221040 is an apocalyptic number.

242221040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242221040 is an abundant number, since it is smaller than the sum of its proper divisors (320943064).

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

242221040 is a wasteful number, since it uses less digits than its factorization.

242221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027776 (or 3027770 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 242221040 is about 15563.4520592316. The cubic root of 242221040 is about 623.3576421708.

Adding to 242221040 its reverse (40122242), we get a palindrome (282343282).

The spelling of 242221040 in words is "two hundred forty-two million, two hundred twenty-one thousand, forty".