242420010143 has 4 divisors (see below), whose sum is σ = 252960010608. Its totient is φ = 231880009680.

The previous prime is 242420010139. The next prime is 242420010187. The reversal of 242420010143 is 341010024242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242420010143 - 2² = 242420010139 is a prime.

It is a super-2 number, since 2×242420010143² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 10540000441 = 242420010143 / (2 + 4 + 2 + 4 + 2 + 0 + 0 + 1 + 0 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242420010113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5270000198 + ... + 5270000243.

It is an arithmetic number, because the mean of its divisors is an integer number (63240002652).

Almost surely, 2^242420010143 is an apocalyptic number.

242420010143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

242420010143 is a deficient number, since it is larger than the sum of its proper divisors (10540000465).

242420010143 is a wasteful number, since it uses less digits than its factorization.

242420010143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10540000464.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 242420010143 its reverse (341010024242), we get a palindrome (583430034385).

The spelling of 242420010143 in words is "two hundred forty-two billion, four hundred twenty million, ten thousand, one hundred forty-three".