122140550 has 48 divisors (see below), whose sum is σ = 273315840. Its totient is φ = 39670560.

The previous prime is 122140549. The next prime is 122140553. The reversal of 122140550 is 55041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122140553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2534 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (5694080).

Almost surely, 2^122140550 is an apocalyptic number.

122140550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122140550 is an abundant number, since it is smaller than the sum of its proper divisors (151175290).

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

122140550 is a wasteful number, since it uses less digits than its factorization.

122140550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18405 (or 18400 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 122140550 is about 11051.7215853459. The cubic root of 122140550 is about 496.1579529675.

Adding to 122140550 its reverse (55041221), we get a palindrome (177181771).

The spelling of 122140550 in words is "one hundred twenty-two million, one hundred forty thousand, five hundred fifty".