42120222231 has 8 divisors (see below), whose sum is σ = 56836926720. Its totient is φ = 27741832952.

The previous prime is 42120222217. The next prime is 42120222233. The reversal of 42120222231 is 13222202124.

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

It is a cyclic number.

It is not a de Polignac number, because 42120222231 - 2¹⁹ = 42119697943 is a prime.

It is a super-2 number, since 2×42120222231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42120222198 and 42120222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120222233) 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, 84578511 + ... + 84579008.

It is an arithmetic number, because the mean of its divisors is an integer number (7104615840).

Almost surely, 2^42120222231 is an apocalyptic number.

42120222231 is a deficient number, since it is larger than the sum of its proper divisors (14716704489).

42120222231 is a wasteful number, since it uses less digits than its factorization.

42120222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169157605.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42120222231 its reverse (13222202124), we get a palindrome (55342424355).

The spelling of 42120222231 in words is "forty-two billion, one hundred twenty million, two hundred twenty-two thousand, two hundred thirty-one".