122205040 has 20 divisors (see below), whose sum is σ = 284126904. Its totient is φ = 48881984.

The previous prime is 122204947. The next prime is 122205059. The reversal of 122205040 is 40502221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763702 + ... + 763861.

Almost surely, 2^122205040 is an apocalyptic number.

122205040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122205040 is an abundant number, since it is smaller than the sum of its proper divisors (161921864).

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

122205040 is a wasteful number, since it uses less digits than its factorization.

122205040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527576 (or 1527570 counting only the distinct ones).

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

The square root of 122205040 is about 11054.6388452993. The cubic root of 122205040 is about 496.2452611179.

Adding to 122205040 its reverse (40502221), we get a palindrome (162707261).

The spelling of 122205040 in words is "one hundred twenty-two million, two hundred five thousand, forty".