122401789 has 8 divisors (see below), whose sum is σ = 124001280. Its totient is φ = 120807456.

The previous prime is 122401759. The next prime is 122401817. The reversal of 122401789 is 987104221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122401789 - 2¹⁵ = 122369021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122401709) 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 7 ways as a sum of consecutive naturals, for example, 72772 + ... + 74434.

It is an arithmetic number, because the mean of its divisors is an integer number (15500160).

Almost surely, 2^122401789 is an apocalyptic number.

It is an amenable number.

122401789 is a deficient number, since it is larger than the sum of its proper divisors (1599491).

122401789 is an equidigital number, since it uses as much as digits as its factorization.

122401789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 122401789 is about 11063.5342002454. The cubic root of 122401789 is about 496.5114351048.

The spelling of 122401789 in words is "one hundred twenty-two million, four hundred one thousand, seven hundred eighty-nine".