124134221 has 4 divisors (see below), whose sum is σ = 131436252. Its totient is φ = 116832192.

The previous prime is 124134217. The next prime is 124134233. The reversal of 124134221 is 122431421.

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 74149321 + 49984900 = 8611^2 + 7070^2 .

It is a cyclic number.

It is not a de Polignac number, because 124134221 - 2² = 124134217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124134193 and 124134202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124134251) 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, 3650990 + ... + 3651023.

It is an arithmetic number, because the mean of its divisors is an integer number (32859063).

Almost surely, 2^124134221 is an apocalyptic number.

It is an amenable number.

124134221 is a deficient number, since it is larger than the sum of its proper divisors (7302031).

124134221 is an equidigital number, since it uses as much as digits as its factorization.

124134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302030.

The product of its digits is 384, while the sum is 20.

The square root of 124134221 is about 11141.5537964864. The cubic root of 124134221 is about 498.8429525477.

Adding to 124134221 its reverse (122431421), we get a palindrome (246565642).

The spelling of 124134221 in words is "one hundred twenty-four million, one hundred thirty-four thousand, two hundred twenty-one".