242020540 has 48 divisors (see below), whose sum is σ = 528099264. Its totient is φ = 93094400.

The previous prime is 242020507. The next prime is 242020547. The reversal of 242020540 is 45020242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242020547) 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, 56142 + ... + 60298.

It is an arithmetic number, because the mean of its divisors is an integer number (11002068).

Almost surely, 2^242020540 is an apocalyptic number.

242020540 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 242020540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264049632).

242020540 is an abundant number, since it is smaller than the sum of its proper divisors (286078724).

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

242020540 is a wasteful number, since it uses less digits than its factorization.

242020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 242020540 is about 15557.0093527002. The cubic root of 242020540 is about 623.1855986132.

Adding to 242020540 its reverse (45020242), we get a palindrome (287040782).

The spelling of 242020540 in words is "two hundred forty-two million, twenty thousand, five hundred forty".