122740530 has 32 divisors (see below), whose sum is σ = 321357888. Its totient is φ = 29755200.

The previous prime is 122740529. The next prime is 122740537. The reversal of 122740530 is 35047221.

It is a self number, because there is not a number n which added to its sum of digits gives 122740530.

It is not an unprimeable number, because it can be changed into a prime (122740537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185641 + ... + 186300.

It is an arithmetic number, because the mean of its divisors is an integer number (10042434).

Almost surely, 2^122740530 is an apocalyptic number.

122740530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122740530 is an abundant number, since it is smaller than the sum of its proper divisors (198617358).

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

122740530 is a wasteful number, since it uses less digits than its factorization.

122740530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371962.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 122740530 is about 11078.8325197198. The cubic root of 122740530 is about 496.9690369860.

Adding to 122740530 its reverse (35047221), we get a palindrome (157787751).

The spelling of 122740530 in words is "one hundred twenty-two million, seven hundred forty thousand, five hundred thirty".