242206140 has 96 divisors (see below), whose sum is σ = 783385344. Its totient is φ = 55260160.

The previous prime is 242206109. The next prime is 242206177. The reversal of 242206140 is 41602242.

242206140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (8160264).

Almost surely, 2^242206140 is an apocalyptic number.

242206140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242206140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391692672).

242206140 is an abundant number, since it is smaller than the sum of its proper divisors (541179204).

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

242206140 is a wasteful number, since it uses less digits than its factorization.

242206140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21627 (or 21625 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 242206140 is about 15562.9733662948. The cubic root of 242206140 is about 623.3448601552.

Adding to 242206140 its reverse (41602242), we get a palindrome (283808382).

The spelling of 242206140 in words is "two hundred forty-two million, two hundred six thousand, one hundred forty".