122003506 has 4 divisors (see below), whose sum is σ = 183005262. Its totient is φ = 61001752.

The previous prime is 122003461. The next prime is 122003521. The reversal of 122003506 is 605300221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605300221 = 1289 ⋅469589.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 6548481 = 10745^2 + 2559^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500875 + ... + 30500878.

Almost surely, 2^122003506 is an apocalyptic number.

122003506 is a deficient number, since it is larger than the sum of its proper divisors (61001756).

122003506 is an equidigital number, since it uses as much as digits as its factorization.

122003506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61001755.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 122003506 is about 11045.5197252099. The cubic root of 122003506 is about 495.9723173286.

Adding to 122003506 its reverse (605300221), we get a palindrome (727303727).

The spelling of 122003506 in words is "one hundred twenty-two million, three thousand, five hundred six".