123921041 has 8 divisors (see below), whose sum is σ = 132511464. Its totient is φ = 115475200.

The previous prime is 123921023. The next prime is 123921047. The reversal of 123921041 is 140129321.

It can be written as a sum of positive squares in 4 ways, for example, as 39740416 + 84180625 = 6304^2 + 9175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123921041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123920998 and 123921016.

It is not an unprimeable number, because it can be changed into a prime (123921047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34370 + ... + 37803.

It is an arithmetic number, because the mean of its divisors is an integer number (16563933).

Almost surely, 2^123921041 is an apocalyptic number.

It is an amenable number.

123921041 is a deficient number, since it is larger than the sum of its proper divisors (8590423).

123921041 is a wasteful number, since it uses less digits than its factorization.

123921041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72291.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 123921041 is about 11131.9827973277. The cubic root of 123921041 is about 498.5572288270.

The spelling of 123921041 in words is "one hundred twenty-three million, nine hundred twenty-one thousand, forty-one".