105021403 has 2 divisors, whose sum is σ = 105021404. Its totient is φ = 105021402.

The previous prime is 105021401. The next prime is 105021407. The reversal of 105021403 is 304120501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105021403 - 2¹ = 105021401 is a prime.

It is a super-2 number, since 2×105021403² = 22058990176176818, which contains 22 as substring.

Together with 105021401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (105021401) 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, 52510701 + 52510702.

It is an arithmetic number, because the mean of its divisors is an integer number (52510702).

Almost surely, 2^105021403 is an apocalyptic number.

105021403 is a deficient number, since it is larger than the sum of its proper divisors (1).

105021403 is an equidigital number, since it uses as much as digits as its factorization.

105021403 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 16.

The square root of 105021403 is about 10247.9950722080. The cubic root of 105021403 is about 471.8014507124.

Adding to 105021403 its reverse (304120501), we get a palindrome (409141904).

It can be divided in two parts, 10502 and 1403, that multiplied together give a triangular number (14734306 = T₅₄₂₈).

The spelling of 105021403 in words is "one hundred five million, twenty-one thousand, four hundred three".