122478281 has 8 divisors (see below), whose sum is σ = 126871680. Its totient is φ = 118096272.

The previous prime is 122478271. The next prime is 122478371. The reversal of 122478281 is 182874221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122478281 is a prime.

It is a super-2 number, since 2×122478281² = 30001858633429922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122478271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23216 + ... + 27998.

It is an arithmetic number, because the mean of its divisors is an integer number (15858960).

Almost surely, 2^122478281 is an apocalyptic number.

It is an amenable number.

122478281 is a deficient number, since it is larger than the sum of its proper divisors (4393399).

122478281 is an equidigital number, since it uses as much as digits as its factorization.

122478281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695.

The product of its digits is 14336, while the sum is 35.

The square root of 122478281 is about 11066.9906026887. The cubic root of 122478281 is about 496.6148411208.

The spelling of 122478281 in words is "one hundred twenty-two million, four hundred seventy-eight thousand, two hundred eighty-one".