242400003021 has 48 divisors (see below), whose sum is σ = 394016470848. Its totient is φ = 142308403200.

The previous prime is 242400003017. The next prime is 242400003059. The reversal of 242400003021 is 120300004242.

242400003021 is a `hidden beast` number, since 242 + 400 + 0 + 0 + 3 + 0 + 21 = 666.

It is not a de Polignac number, because 242400003021 - 2² = 242400003017 is a prime.

It is a super-2 number, since 2×242400003021² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242400002985 and 242400003003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242400003011) by changing a digit.

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, 685741 + ... + 977261.

It is an arithmetic number, because the mean of its divisors is an integer number (8208676476).

Almost surely, 2^242400003021 is an apocalyptic number.

It is an amenable number.

242400003021 is a deficient number, since it is larger than the sum of its proper divisors (151616467827).

242400003021 is a wasteful number, since it uses less digits than its factorization.

242400003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291802 (or 291799 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 242400003021 its reverse (120300004242), we get a palindrome (362700007263).

The spelling of 242400003021 in words is "two hundred forty-two billion, four hundred million, three thousand, twenty-one".