122440427 has 4 divisors (see below), whose sum is σ = 128884680. Its totient is φ = 115996176.

The previous prime is 122440379. The next prime is 122440429. The reversal of 122440427 is 724044221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724044221 = 23633 ⋅30637.

It is a cyclic number.

It is not a de Polignac number, because 122440427 - 2¹² = 122436331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122440396 and 122440405.

It is not an unprimeable number, because it can be changed into a prime (122440429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3222098 + ... + 3222135.

It is an arithmetic number, because the mean of its divisors is an integer number (32221170).

Almost surely, 2^122440427 is an apocalyptic number.

122440427 is a deficient number, since it is larger than the sum of its proper divisors (6444253).

122440427 is an equidigital number, since it uses as much as digits as its factorization.

122440427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444252.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 122440427 is about 11065.2802495011. The cubic root of 122440427 is about 496.5636734224.

Adding to 122440427 its reverse (724044221), we get a palindrome (846484648).

The spelling of 122440427 in words is "one hundred twenty-two million, four hundred forty thousand, four hundred twenty-seven".