122885782 has 4 divisors (see below), whose sum is σ = 184328676. Its totient is φ = 61442890.

The previous prime is 122885773. The next prime is 122885783. The reversal of 122885782 is 287588221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 287588221 = 61 ⋅4714561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122885783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30721444 + ... + 30721447.

It is an arithmetic number, because the mean of its divisors is an integer number (46082169).

Almost surely, 2^122885782 is an apocalyptic number.

122885782 is a deficient number, since it is larger than the sum of its proper divisors (61442894).

122885782 is an equidigital number, since it uses as much as digits as its factorization.

122885782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61442893.

The product of its digits is 143360, while the sum is 43.

The square root of 122885782 is about 11085.3859653149. The cubic root of 122885782 is about 497.1649985813.

The spelling of 122885782 in words is "one hundred twenty-two million, eight hundred eighty-five thousand, seven hundred eighty-two".