122143650 has 96 divisors (see below), whose sum is σ = 321140160. Its totient is φ = 30670080.

The previous prime is 122143631. The next prime is 122143669. The reversal of 122143650 is 56341221.

It is an interprime number because it is at equal distance from previous prime (122143631) and next prime (122143669).

It is a self number, because there is not a number n which added to its sum of digits gives 122143650.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186724 + ... + 187376.

It is an arithmetic number, because the mean of its divisors is an integer number (3345210).

Almost surely, 2^122143650 is an apocalyptic number.

122143650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122143650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160570080).

122143650 is an abundant number, since it is smaller than the sum of its proper divisors (198996510).

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

122143650 is a wasteful number, since it uses less digits than its factorization.

122143650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 122143650 is about 11051.8618340984. The cubic root of 122143650 is about 496.1621505269.

Adding to 122143650 its reverse (56341221), we get a palindrome (178484871).

The spelling of 122143650 in words is "one hundred twenty-two million, one hundred forty-three thousand, six hundred fifty".