122087805 has 16 divisors (see below), whose sum is σ = 223246464. Its totient is φ = 55811520.

The previous prime is 122087803. The next prime is 122087809. The reversal of 122087805 is 508780221.

It is not a de Polignac number, because 122087805 - 2¹ = 122087803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122087803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581266 + ... + 581475.

It is an arithmetic number, because the mean of its divisors is an integer number (13952904).

Almost surely, 2^122087805 is an apocalyptic number.

122087805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122087805 is a deficient number, since it is larger than the sum of its proper divisors (101158659).

122087805 is a wasteful number, since it uses less digits than its factorization.

122087805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162756.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 122087805 is about 11049.3350478660. The cubic root of 122087805 is about 496.0865226380.

The spelling of 122087805 in words is "one hundred twenty-two million, eighty-seven thousand, eight hundred five".