242499420 has 144 divisors (see below), whose sum is σ = 782072928. Its totient is φ = 63037440.

The previous prime is 242499401. The next prime is 242499449. The reversal of 242499420 is 24994242.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198652 + ... + 199868.

It is an arithmetic number, because the mean of its divisors is an integer number (5431062).

Almost surely, 2^242499420 is an apocalyptic number.

242499420 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 242499420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391036464).

242499420 is an abundant number, since it is smaller than the sum of its proper divisors (539573508).

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

242499420 is a wasteful number, since it uses less digits than its factorization.

242499420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 242499420 is about 15572.3928797086. The cubic root of 242499420 is about 623.5963550760.

The spelling of 242499420 in words is "two hundred forty-two million, four hundred ninety-nine thousand, four hundred twenty".