1030403121 has 16 divisors (see below), whose sum is σ = 1539277248. Its totient is φ = 607608000.

The previous prime is 1030403113. The next prime is 1030403173. The reversal of 1030403121 is 1213040301.

It is not a de Polignac number, because 1030403121 - 2³ = 1030403113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1030403121.

It is not an unprimeable number, because it can be changed into a prime (1030403221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420730 + ... + 423171.

It is an arithmetic number, because the mean of its divisors is an integer number (96204828).

Almost surely, 2^1030403121 is an apocalyptic number.

1030403121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1030403121 is a deficient number, since it is larger than the sum of its proper divisors (508874127).

1030403121 is a wasteful number, since it uses less digits than its factorization.

1030403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843952.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1030403121 is about 32099.8928502885. The cubic root of 1030403121 is about 1010.0333685018.

Adding to 1030403121 its reverse (1213040301), we get a palindrome (2243443422).

The spelling of 1030403121 in words is "one billion, thirty million, four hundred three thousand, one hundred twenty-one".