1045113021 has 12 divisors (see below), whose sum is σ = 1509946620. Its totient is φ = 696585600.

The previous prime is 1045113019. The next prime is 1045113023. The reversal of 1045113021 is 1203115401.

1045113021 is a `hidden beast` number, since 104 + 511 + 30 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (1045113019) and next prime (1045113023).

It can be written as a sum of positive squares in 2 ways, for example, as 818760996 + 226352025 = 28614^2 + 15045^2 .

It is not a de Polignac number, because 1045113021 - 2¹ = 1045113019 is a prime.

It is a super-2 number, since 2×1045113021² = 2184522453327492882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1045112985 and 1045113003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045113023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41125 + ... + 61493.

It is an arithmetic number, because the mean of its divisors is an integer number (125828885).

Almost surely, 2^1045113021 is an apocalyptic number.

It is an amenable number.

1045113021 is a deficient number, since it is larger than the sum of its proper divisors (464833599).

1045113021 is a wasteful number, since it uses less digits than its factorization.

1045113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26076 (or 26073 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1045113021 is about 32328.2078222719. The cubic root of 1045113021 is about 1014.8170445232.

Adding to 1045113021 its reverse (1203115401), we get a palindrome (2248228422).

The spelling of 1045113021 in words is "one billion, forty-five million, one hundred thirteen thousand, twenty-one".