105420428 has 6 divisors (see below), whose sum is σ = 184485756. Its totient is φ = 52710212.

The previous prime is 105420421. The next prime is 105420457. The reversal of 105420428 is 824024501.

It is a happy number.

It is a super-2 number, since 2×105420428² = 22226933279406368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105420397 and 105420406.

It is not an unprimeable number, because it can be changed into a prime (105420421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13177550 + ... + 13177557.

It is an arithmetic number, because the mean of its divisors is an integer number (30747626).

Almost surely, 2^105420428 is an apocalyptic number.

It is an amenable number.

105420428 is a deficient number, since it is larger than the sum of its proper divisors (79065328).

105420428 is a wasteful number, since it uses less digits than its factorization.

105420428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26355111 (or 26355109 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 105420428 is about 10267.4450570724. The cubic root of 105420428 is about 472.3982263561.

Adding to 105420428 its reverse (824024501), we get a palindrome (929444929).

The spelling of 105420428 in words is "one hundred five million, four hundred twenty thousand, four hundred twenty-eight".