422139 has 8 divisors (see below), whose sum is σ = 566272. Its totient is φ = 279720.

The previous prime is 422137. The next prime is 422141. The reversal of 422139 is 931224.

It is an interprime number because it is at equal distance from previous prime (422137) and next prime (422141).

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

It is not a de Polignac number, because 422139 - 2¹ = 422137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422137) 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, 354 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (70784).

2⁴²²¹³⁹ is an apocalyptic number.

422139 is a deficient number, since it is larger than the sum of its proper divisors (144133).

422139 is a wasteful number, since it uses less digits than its factorization.

422139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its digits is 432, while the sum is 21.

The square root of 422139 is about 649.7222483492. The cubic root of 422139 is about 75.0156411823.

It can be divided in two parts, 422 and 139, that added together give a triangular number (561 = T₃₃).

The spelling of 422139 in words is "four hundred twenty-two thousand, one hundred thirty-nine".