122417842 has 4 divisors (see below), whose sum is σ = 183626766. Its totient is φ = 61208920.

The previous prime is 122417839. The next prime is 122417843. The reversal of 122417842 is 248714221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248714221 = 7 ⋅35530603.

It can be written as a sum of positive squares in only one way, i.e., 113230881 + 9186961 = 10641^2 + 3031^2 .

It is a super-2 number, since 2×122417842² = 29972256079873928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (122417843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30604459 + ... + 30604462.

Almost surely, 2^122417842 is an apocalyptic number.

122417842 is a deficient number, since it is larger than the sum of its proper divisors (61208924).

122417842 is an equidigital number, since it uses as much as digits as its factorization.

122417842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61208923.

The product of its digits is 7168, while the sum is 31.

The square root of 122417842 is about 11064.2596679579. The cubic root of 122417842 is about 496.5331399881.

The spelling of 122417842 in words is "one hundred twenty-two million, four hundred seventeen thousand, eight hundred forty-two".