242122140 has 72 divisors (see below), whose sum is σ = 790939968. Its totient is φ = 59598720.

The previous prime is 242122129. The next prime is 242122151. The reversal of 242122140 is 41221242.

242122140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (242122129) and next prime (242122151).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49396 + ... + 54075.

Almost surely, 2^242122140 is an apocalyptic number.

242122140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242122140 is an abundant number, since it is smaller than the sum of its proper divisors (548817828).

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

242122140 is a wasteful number, since it uses less digits than its factorization.

242122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103499 (or 103494 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 242122140 is about 15560.2744191740. The cubic root of 242122140 is about 623.2727906603.

Adding to 242122140 its reverse (41221242), we get a palindrome (283343382).

The spelling of 242122140 in words is "two hundred forty-two million, one hundred twenty-two thousand, one hundred forty".