242540142 has 32 divisors (see below), whose sum is σ = 526230432. Its totient is φ = 74079744.

The previous prime is 242540141. The next prime is 242540147. The reversal of 242540142 is 241045242.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242540141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 22034.

It is an arithmetic number, because the mean of its divisors is an integer number (16444701).

Almost surely, 2^242540142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242540142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263115216).

242540142 is an abundant number, since it is smaller than the sum of its proper divisors (283690290).

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

242540142 is a wasteful number, since it uses less digits than its factorization.

242540142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22852.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 242540142 is about 15573.7003310068. The cubic root of 242540142 is about 623.6312591725.

Adding to 242540142 its reverse (241045242), we get a palindrome (483585384).

The spelling of 242540142 in words is "two hundred forty-two million, five hundred forty thousand, one hundred forty-two".