242820501 has 24 divisors (see below), whose sum is σ = 406711872. Its totient is φ = 126139200.

The previous prime is 242820493. The next prime is 242820517. The reversal of 242820501 is 105028242.

It is not a de Polignac number, because 242820501 - 2³ = 242820493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242820521) 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, 45240 + ... + 50321.

It is an arithmetic number, because the mean of its divisors is an integer number (16946328).

Almost surely, 2^242820501 is an apocalyptic number.

242820501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

242820501 is a deficient number, since it is larger than the sum of its proper divisors (163891371).

242820501 is a wasteful number, since it uses less digits than its factorization.

242820501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95593 (or 95582 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 242820501 is about 15582.6987713939. The cubic root of 242820501 is about 623.8714576406.

Adding to 242820501 its reverse (105028242), we get a palindrome (347848743).

The spelling of 242820501 in words is "two hundred forty-two million, eight hundred twenty thousand, five hundred one".