124228081 has 4 divisors (see below), whose sum is σ = 125458164. Its totient is φ = 122998000.

The previous prime is 124228043. The next prime is 124228087. The reversal of 124228081 is 180822421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122766400 + 1461681 = 11080^2 + 1209^2 .

It is a cyclic number.

It is not a de Polignac number, because 124228081 - 2⁷ = 124227953 is a prime.

It is a super-2 number, since 2×124228081² = 30865232217885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124228087) 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, 614890 + ... + 615091.

It is an arithmetic number, because the mean of its divisors is an integer number (31364541).

Almost surely, 2^124228081 is an apocalyptic number.

It is an amenable number.

124228081 is a deficient number, since it is larger than the sum of its proper divisors (1230083).

124228081 is a wasteful number, since it uses less digits than its factorization.

124228081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230082.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 124228081 is about 11145.7651599161. The cubic root of 124228081 is about 498.9686487586.

It can be divided in two parts, 12422 and 8081, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 124228081 in words is "one hundred twenty-four million, two hundred twenty-eight thousand, eighty-one".