42340042221 has 8 divisors (see below), whose sum is σ = 56456415840. Its totient is φ = 28225181712.

The previous prime is 42340042183. The next prime is 42340042231. The reversal of 42340042221 is 12224004324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42340042221 - 2⁷ = 42340042093 is a prime.

It is a super-2 number, since 2×42340042221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42340042191 and 42340042200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340042231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311290 + ... + 426123.

It is an arithmetic number, because the mean of its divisors is an integer number (7057051980).

Almost surely, 2^42340042221 is an apocalyptic number.

It is an amenable number.

42340042221 is a deficient number, since it is larger than the sum of its proper divisors (14116373619).

42340042221 is a wasteful number, since it uses less digits than its factorization.

42340042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756555.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 42340042221 its reverse (12224004324), we get a palindrome (54564046545).

The spelling of 42340042221 in words is "forty-two billion, three hundred forty million, forty-two thousand, two hundred twenty-one".