122402550 has 96 divisors (see below), whose sum is σ = 335549952. Its totient is φ = 29370880.

The previous prime is 122402519. The next prime is 122402551. The reversal of 122402550 is 55204221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122402551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57607 + ... + 59693.

It is an arithmetic number, because the mean of its divisors is an integer number (3495312).

Almost surely, 2^122402550 is an apocalyptic number.

122402550 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 122402550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167774976).

122402550 is an abundant number, since it is smaller than the sum of its proper divisors (213147402).

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

122402550 is a wasteful number, since it uses less digits than its factorization.

122402550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2137 counting only the distinct ones).

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

The square root of 122402550 is about 11063.5685924570. The cubic root of 122402550 is about 496.5124640778.

Adding to 122402550 its reverse (55204221), we get a palindrome (177606771).

The spelling of 122402550 in words is "one hundred twenty-two million, four hundred two thousand, five hundred fifty".