122140 has 24 divisors (see below), whose sum is σ = 266112. Its totient is φ = 47040.

The previous prime is 122131. The next prime is 122147. The reversal of 122140 is 41221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122147) 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, 522 + ... + 718.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2¹²²¹⁴⁰ is an apocalyptic number.

122140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133056).

122140 is an abundant number, since it is smaller than the sum of its proper divisors (143972).

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

122140 is a wasteful number, since it uses less digits than its factorization.

122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 122140 is about 349.4853358869. The cubic root of 122140 is about 49.6157208232.

Adding to 122140 its reverse (41221), we get a palindrome (163361).

It can be divided in two parts, 122 and 140, that added together give a palindrome (262).

The spelling of 122140 in words is "one hundred twenty-two thousand, one hundred forty", and thus it is an iban number.