105420503403 has 16 divisors (see below), whose sum is σ = 156304828960. Its totient is φ = 70223498208.

The previous prime is 105420503371. The next prime is 105420503407. The reversal of 105420503403 is 304305024501.

105420503403 is a `hidden beast` number, since 1 + 0 + 54 + 205 + 0 + 3 + 403 = 666.

It is not a de Polignac number, because 105420503403 - 2⁵ = 105420503371 is a prime.

It is a super-2 number, since 2×105420503403² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105420503407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544800 + ... + 1611597.

It is an arithmetic number, because the mean of its divisors is an integer number (9769051810).

Almost surely, 2^105420503403 is an apocalyptic number.

105420503403 is a deficient number, since it is larger than the sum of its proper divisors (50884325557).

105420503403 is a wasteful number, since it uses less digits than its factorization.

105420503403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157643 (or 3157637 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 105420503403 its reverse (304305024501), we get a palindrome (409725527904).

The spelling of 105420503403 in words is "one hundred five billion, four hundred twenty million, five hundred three thousand, four hundred three".