103405128 has 32 divisors (see below), whose sum is σ = 258763200. Its totient is φ = 34435008.

The previous prime is 103405109. The next prime is 103405129. The reversal of 103405128 is 821504301.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 103405098 and 103405107.

It is not an unprimeable number, because it can be changed into a prime (103405129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43950 + ... + 46242.

It is an arithmetic number, because the mean of its divisors is an integer number (8086350).

Almost surely, 2^103405128 is an apocalyptic number.

It is an amenable number.

103405128 is an abundant number, since it is smaller than the sum of its proper divisors (155358072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103405128 is a wasteful number, since it uses less digits than its factorization.

103405128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 103405128 is about 10168.8312012738. The cubic root of 103405128 is about 469.3685923027.

Adding to 103405128 its reverse (821504301), we get a palindrome (924909429).

The spelling of 103405128 in words is "one hundred three million, four hundred five thousand, one hundred twenty-eight".