42123422 has 16 divisors (see below), whose sum is σ = 69033600.
Its totient is φ = 19118040.
The previous prime is 42123401. The next prime is 42123449. The reversal of 42123422 is 22432124.
Adding to 42123422 its reverse (22432124), we get a palindrome (64555546).
It is a junction number, because it is equal to n+sod(n) for n = 42123394 and 42123403.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21479 + ... + 23357.
It is an arithmetic number, because the mean of its divisors is an integer number (4314600).
Almost surely, 242123422 is an apocalyptic number.
42123422 is a deficient number, since it is larger than the sum of its proper divisors (26910178).
42123422 is a wasteful number, since it uses less digits than its factorization.
42123422 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2911.
The product of its digits is 768, while the sum is 20.
The square root of 42123422 is about 6490.2559271573.
The cubic root of 42123422 is about 347.9428221116.
The spelling of 42123422 in words is "forty-two million, one hundred twenty-three thousand, four hundred twenty-two".