243001020 has 48 divisors (see below), whose sum is σ = 682905888. Its totient is φ = 64561920.

The previous prime is 243001019. The next prime is 243001097. The reversal of 243001020 is 20100342.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 243000987 and 243001005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9310 + ... + 23930.

It is an arithmetic number, because the mean of its divisors is an integer number (14227206).

Almost surely, 2^243001020 is an apocalyptic number.

243001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243001020 is an abundant number, since it is smaller than the sum of its proper divisors (439904868).

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

243001020 is a wasteful number, since it uses less digits than its factorization.

243001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14910 (or 14908 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 243001020 is about 15588.4899846008. The cubic root of 243001020 is about 624.0260200360.

Adding to 243001020 its reverse (20100342), we get a palindrome (263101362).

The spelling of 243001020 in words is "two hundred forty-three million, one thousand, twenty".