103405121 has 8 divisors (see below), whose sum is σ = 107196480. Its totient is φ = 99666288.

The previous prime is 103405109. The next prime is 103405129. The reversal of 103405121 is 121504301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103405121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103405121.

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, 9101 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (13399560).

Almost surely, 2^103405121 is an apocalyptic number.

It is an amenable number.

103405121 is a deficient number, since it is larger than the sum of its proper divisors (3791359).

103405121 is a wasteful number, since it uses less digits than its factorization.

103405121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26263.

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

The square root of 103405121 is about 10168.8308570848. The cubic root of 103405121 is about 469.3685817114.

Adding to 103405121 its reverse (121504301), we get a palindrome (224909422).

It can be divided in two parts, 103 and 405121, that added together give a cube (405224 = 74³).

The spelling of 103405121 in words is "one hundred three million, four hundred five thousand, one hundred twenty-one".