1603121 has 8 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 1466640.

The previous prime is 1603111. The next prime is 1603139. The reversal of 1603121 is 1213061.

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

It is a cyclic number.

It is not a de Polignac number, because 1603121 - 2⁶ = 1603057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1603096 and 1603105.

It is not an unprimeable number, because it can be changed into a prime (1603111) 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, 1166 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

2^1603121 is an apocalyptic number.

It is an amenable number.

1603121 is a deficient number, since it is larger than the sum of its proper divisors (138703).

1603121 is a wasteful number, since it uses less digits than its factorization.

1603121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1603121 is about 1266.1441466121. The cubic root of 1603121 is about 117.0367089625.

Adding to 1603121 its reverse (1213061), we get a palindrome (2816182).

The spelling of 1603121 in words is "one million, six hundred three thousand, one hundred twenty-one".