124116021 has 6 divisors (see below), whose sum is σ = 179278710. Its totient is φ = 82744008.

The previous prime is 124116007. The next prime is 124116121. The reversal of 124116021 is 120611421.

It can be written as a sum of positive squares in only one way, i.e., 123876900 + 239121 = 11130^2 + 489^2 .

It is not a de Polignac number, because 124116021 - 2⁵ = 124115989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124115985 and 124116003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124116121) 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, 6895326 + ... + 6895343.

It is an arithmetic number, because the mean of its divisors is an integer number (29879785).

Almost surely, 2^124116021 is an apocalyptic number.

It is an amenable number.

124116021 is a deficient number, since it is larger than the sum of its proper divisors (55162689).

124116021 is a wasteful number, since it uses less digits than its factorization.

124116021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13790675 (or 13790672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 124116021 is about 11140.7370043458. The cubic root of 124116021 is about 498.8185719877.

Adding to 124116021 its reverse (120611421), we get a palindrome (244727442).

The spelling of 124116021 in words is "one hundred twenty-four million, one hundred sixteen thousand, twenty-one".