42240220243 has 16 divisors (see below), whose sum is σ = 45616870656. Its totient is φ = 38881908000.

The previous prime is 42240220241. The next prime is 42240220249. The reversal of 42240220243 is 34202204224.

It is not a de Polignac number, because 42240220243 - 2¹ = 42240220241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42240220241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12991368 + ... + 12994618.

It is an arithmetic number, because the mean of its divisors is an integer number (2851054416).

Almost surely, 2^42240220243 is an apocalyptic number.

42240220243 is a deficient number, since it is larger than the sum of its proper divisors (3376650413).

42240220243 is a wasteful number, since it uses less digits than its factorization.

42240220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 42240220243 its reverse (34202204224), we get a palindrome (76442424467).

The spelling of 42240220243 in words is "forty-two billion, two hundred forty million, two hundred twenty thousand, two hundred forty-three".