122642271 has 6 divisors (see below), whose sum is σ = 177149960. Its totient is φ = 81761508.

The previous prime is 122642257. The next prime is 122642281. The reversal of 122642271 is 172246221.

122642271 is a `hidden beast` number, since 12 + 2 + 642 + 2 + 7 + 1 = 666.

It is not a de Polignac number, because 122642271 - 2⁵ = 122642239 is a prime.

It is a super-2 number, since 2×122642271² = 30082253272074882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122642281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6813451 + ... + 6813468.

Almost surely, 2^122642271 is an apocalyptic number.

122642271 is a deficient number, since it is larger than the sum of its proper divisors (54507689).

122642271 is a wasteful number, since it uses less digits than its factorization.

122642271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13626925 (or 13626922 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 122642271 is about 11074.3970941989. The cubic root of 122642271 is about 496.8363866516.

Adding to 122642271 its reverse (172246221), we get a palindrome (294888492).

It can be divided in two parts, 12264 and 2271, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 122642271 in words is "one hundred twenty-two million, six hundred forty-two thousand, two hundred seventy-one".