1045403121 has 16 divisors (see below), whose sum is σ = 1594819584. Its totient is φ = 596689104.

The previous prime is 1045403101. The next prime is 1045403131. The reversal of 1045403121 is 1213045401.

It is not a de Polignac number, because 1045403121 - 2⁷ = 1045402993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1045403101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9435 + ... + 46688.

It is an arithmetic number, because the mean of its divisors is an integer number (99676224).

Almost surely, 2^1045403121 is an apocalyptic number.

It is an amenable number.

1045403121 is a deficient number, since it is larger than the sum of its proper divisors (549416463).

1045403121 is an equidigital number, since it uses as much as digits as its factorization.

1045403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57020.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1045403121 is about 32332.6943046818. The cubic root of 1045403121 is about 1014.9109326748.

Adding to 1045403121 its reverse (1213045401), we get a palindrome (2258448522).

The spelling of 1045403121 in words is "one billion, forty-five million, four hundred three thousand, one hundred twenty-one".