139122 has 24 divisors (see below), whose sum is σ = 308880. Its totient is φ = 45240.

The previous prime is 139121. The next prime is 139123. The reversal of 139122 is 221931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139121) and next prime (139123).

It is a super-3 number, since 3×139122³ = 8078090083331544, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 139095 and 139104.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139122.

It is not an unprimeable number, because it can be changed into a prime (139121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (12870).

2¹³⁹¹²² is an apocalyptic number.

139122 is an abundant number, since it is smaller than the sum of its proper divisors (169758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139122 is a wasteful number, since it uses less digits than its factorization.

139122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 195 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 139122 is about 372.9906165040. The cubic root of 139122 is about 51.8161654550.

The spelling of 139122 in words is "one hundred thirty-nine thousand, one hundred twenty-two".