42201340121 has 4 divisors (see below), whose sum is σ = 42204429072. Its totient is φ = 42198251172.

The previous prime is 42201340063. The next prime is 42201340201. The reversal of 42201340121 is 12104310224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42201340121 - 2¹⁰ = 42201339097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42201340093 and 42201340102.

It is not an unprimeable number, because it can be changed into a prime (42201340421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1523891 + ... + 1551336.

It is an arithmetic number, because the mean of its divisors is an integer number (10551107268).

Almost surely, 2^42201340121 is an apocalyptic number.

It is an amenable number.

42201340121 is a deficient number, since it is larger than the sum of its proper divisors (3088951).

42201340121 is a wasteful number, since it uses less digits than its factorization.

42201340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088950.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42201340121 its reverse (12104310224), we get a palindrome (54305650345).

The spelling of 42201340121 in words is "forty-two billion, two hundred one million, three hundred forty thousand, one hundred twenty-one".