122420700 has 72 divisors (see below), whose sum is σ = 393568560. Its totient is φ = 32644800.

The previous prime is 122420671. The next prime is 122420707. The reversal of 122420700 is 7024221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122420707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19971 + ... + 25370.

It is an arithmetic number, because the mean of its divisors is an integer number (5466230).

Almost surely, 2^122420700 is an apocalyptic number.

122420700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122420700 is an abundant number, since it is smaller than the sum of its proper divisors (271147860).

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

122420700 is a wasteful number, since it uses less digits than its factorization.

122420700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45364 (or 45351 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 122420700 is about 11064.3888218012. The cubic root of 122420700 is about 496.5370040236.

Adding to 122420700 its reverse (7024221), we get a palindrome (129444921).

The spelling of 122420700 in words is "one hundred twenty-two million, four hundred twenty thousand, seven hundred".