122857471 has 12 divisors (see below), whose sum is σ = 135509976. Its totient is φ = 111301520.

The previous prime is 122857459. The next prime is 122857499. The reversal of 122857471 is 174758221.

It is not a de Polignac number, because 122857471 - 2¹⁷ = 122726399 is a prime.

It is a super-3 number, since 3×122857471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122857471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122857571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36756 + ... + 39958.

It is an arithmetic number, because the mean of its divisors is an integer number (11292498).

Almost surely, 2^122857471 is an apocalyptic number.

122857471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122857471 is a deficient number, since it is larger than the sum of its proper divisors (12652505).

122857471 is a wasteful number, since it uses less digits than its factorization.

122857471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542 (or 3531 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 122857471 is about 11084.1089402802. The cubic root of 122857471 is about 497.1268159180.

The spelling of 122857471 in words is "one hundred twenty-two million, eight hundred fifty-seven thousand, four hundred seventy-one".