1003240121 has 4 divisors (see below), whose sum is σ = 1080412452. Its totient is φ = 926067792.

The previous prime is 1003240087. The next prime is 1003240157. The reversal of 1003240121 is 1210423001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 326199721 + 677040400 = 18061^2 + 26020^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1003240121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003240096 and 1003240105.

It is not an unprimeable number, because it can be changed into a prime (1003243121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38586146 + ... + 38586171.

It is an arithmetic number, because the mean of its divisors is an integer number (270103113).

Almost surely, 2^1003240121 is an apocalyptic number.

It is an amenable number.

1003240121 is a deficient number, since it is larger than the sum of its proper divisors (77172331).

1003240121 is an equidigital number, since it uses as much as digits as its factorization.

1003240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77172330.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1003240121 is about 31673.9659815439. The cubic root of 1003240121 is about 1001.0788759414.

Adding to 1003240121 its reverse (1210423001), we get a palindrome (2213663122).

The spelling of 1003240121 in words is "one billion, three million, two hundred forty thousand, one hundred twenty-one".