122140740 has 72 divisors (see below), whose sum is σ = 361005120. Its totient is φ = 30851136.

The previous prime is 122140717. The next prime is 122140747. The reversal of 122140740 is 47041221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122140747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18841 + ... + 24479.

It is an arithmetic number, because the mean of its divisors is an integer number (5013960).

Almost surely, 2^122140740 is an apocalyptic number.

122140740 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 122140740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180502560).

122140740 is an abundant number, since it is smaller than the sum of its proper divisors (238864380).

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

122140740 is a wasteful number, since it uses less digits than its factorization.

122140740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689 (or 5668 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 122140740 is about 11051.7301812884. The cubic root of 122140740 is about 496.1582102393.

Adding to 122140740 its reverse (47041221), we get a palindrome (169181961).

The spelling of 122140740 in words is "one hundred twenty-two million, one hundred forty thousand, seven hundred forty".