242113140 has 72 divisors (see below), whose sum is σ = 736051680. Its totient is φ = 64419264.

The previous prime is 242113127. The next prime is 242113147. The reversal of 242113140 is 41311242.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242113147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97231 + ... + 99689.

It is an arithmetic number, because the mean of its divisors is an integer number (10222940).

Almost surely, 2^242113140 is an apocalyptic number.

242113140 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 242113140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368025840).

242113140 is an abundant number, since it is smaller than the sum of its proper divisors (493938540).

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

242113140 is a wasteful number, since it uses less digits than its factorization.

242113140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 242113140 is about 15559.9852185020. The cubic root of 242113140 is about 623.2650679401.

Adding to 242113140 its reverse (41311242), we get a palindrome (283424382).

The spelling of 242113140 in words is "two hundred forty-two million, one hundred thirteen thousand, one hundred forty".