103415021 has 2 divisors, whose sum is σ = 103415022. Its totient is φ = 103415020.

The previous prime is 103415009. The next prime is 103415033. The reversal of 103415021 is 120514301.

It is a balanced prime because it is at equal distance from previous prime (103415009) and next prime (103415033).

It can be written as a sum of positive squares in only one way, i.e., 74200996 + 29214025 = 8614^2 + 5405^2 .

It is a cyclic number.

It is not a de Polignac number, because 103415021 - 2¹⁰ = 103413997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123415021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51707510 + 51707511.

It is an arithmetic number, because the mean of its divisors is an integer number (51707511).

Almost surely, 2^103415021 is an apocalyptic number.

It is an amenable number.

103415021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103415021 is an equidigital number, since it uses as much as digits as its factorization.

103415021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 103415021 is about 10169.3176270584. The cubic root of 103415021 is about 469.3835603399.

Adding to 103415021 its reverse (120514301), we get a palindrome (223929322).

The spelling of 103415021 in words is "one hundred three million, four hundred fifteen thousand, twenty-one".