122420500 has 24 divisors (see below), whose sum is σ = 267367464. Its totient is φ = 48968000.

The previous prime is 122420491. The next prime is 122420503. The reversal of 122420500 is 5024221.

It can be written as a sum of positive squares in 4 ways, for example, as 16289296 + 106131204 = 4036^2 + 10302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122420503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121921 + ... + 122920.

It is an arithmetic number, because the mean of its divisors is an integer number (11140311).

Almost surely, 2^122420500 is an apocalyptic number.

122420500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122420500 is an abundant number, since it is smaller than the sum of its proper divisors (144946964).

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

122420500 is a wasteful number, since it uses less digits than its factorization.

122420500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244860 (or 244848 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 122420500 is about 11064.3797837927. The cubic root of 122420500 is about 496.5367336242.

Adding to 122420500 its reverse (5024221), we get a palindrome (127444721).

The spelling of 122420500 in words is "one hundred twenty-two million, four hundred twenty thousand, five hundred".