122787946 has 8 divisors (see below), whose sum is σ = 184274820. Its totient is φ = 61363008.

The previous prime is 122787913. The next prime is 122787949. The reversal of 122787946 is 649787221.

It can be written as a sum of positive squares in 2 ways, for example, as 122345721 + 442225 = 11061^2 + 665^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 122787896 and 122787905.

It is not an unprimeable number, because it can be changed into a prime (122787949) by changing a digit.

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, 10161 + ... + 18676.

Almost surely, 2^122787946 is an apocalyptic number.

122787946 is a deficient number, since it is larger than the sum of its proper divisors (61486874).

122787946 is a wasteful number, since it uses less digits than its factorization.

122787946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30968.

The product of its digits is 338688, while the sum is 46.

The square root of 122787946 is about 11080.9722497622. The cubic root of 122787946 is about 497.0330235929.

The spelling of 122787946 in words is "one hundred twenty-two million, seven hundred eighty-seven thousand, nine hundred forty-six".