122540250 has 128 divisors (see below), whose sum is σ = 370386432. Its totient is φ = 26342400.

The previous prime is 122540221. The next prime is 122540269. The reversal of 122540250 is 52045221.

It is a happy number.

It is a super-2 number, since 2×122540250² = 30032225740125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88564 + ... + 89936.

It is an arithmetic number, because the mean of its divisors is an integer number (2893644).

Almost surely, 2^122540250 is an apocalyptic number.

122540250 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 122540250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185193216).

122540250 is an abundant number, since it is smaller than the sum of its proper divisors (247846182).

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

122540250 is a wasteful number, since it uses less digits than its factorization.

122540250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 122540250 is about 11069.7899709073. The cubic root of 122540250 is about 496.6985825974.

Adding to 122540250 its reverse (52045221), we get a palindrome (174585471).

The spelling of 122540250 in words is "one hundred twenty-two million, five hundred forty thousand, two hundred fifty".