122542521 has 8 divisors (see below), whose sum is σ = 165691584. Its totient is φ = 80544240.

The previous prime is 122542513. The next prime is 122542523. The reversal of 122542521 is 125245221.

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

It is not a de Polignac number, because 122542521 - 2³ = 122542513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122542491 and 122542500.

It is not an unprimeable number, because it can be changed into a prime (122542523) 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 7 ways as a sum of consecutive naturals, for example, 287446 + ... + 287871.

It is an arithmetic number, because the mean of its divisors is an integer number (20711448).

Almost surely, 2^122542521 is an apocalyptic number.

It is an amenable number.

122542521 is a deficient number, since it is larger than the sum of its proper divisors (43149063).

122542521 is an equidigital number, since it uses as much as digits as its factorization.

122542521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575391.

The product of its digits is 1600, while the sum is 24.

The square root of 122542521 is about 11069.8925469040. The cubic root of 122542521 is about 496.7016509647.

Adding to 122542521 its reverse (125245221), we get a palindrome (247787742).

The spelling of 122542521 in words is "one hundred twenty-two million, five hundred forty-two thousand, five hundred twenty-one".