103124921 has 2 divisors, whose sum is σ = 103124922. Its totient is φ = 103124920.

The previous prime is 103124897. The next prime is 103124977. The reversal of 103124921 is 129421301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78074896 + 25050025 = 8836^2 + 5005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103124921 is a prime.

It is not a weakly prime, because it can be changed into another prime (103124981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51562460 + 51562461.

It is an arithmetic number, because the mean of its divisors is an integer number (51562461).

Almost surely, 2^103124921 is an apocalyptic number.

It is an amenable number.

103124921 is a deficient number, since it is larger than the sum of its proper divisors (1).

103124921 is an equidigital number, since it uses as much as digits as its factorization.

103124921 is an odious number, because the sum of its binary digits is odd.

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

The square root of 103124921 is about 10155.0441161031. The cubic root of 103124921 is about 468.9442440951.

It can be divided in two parts, 1031 and 24921, that added together give a palindrome (25952).

The spelling of 103124921 in words is "one hundred three million, one hundred twenty-four thousand, nine hundred twenty-one".