1021045023 has 12 divisors (see below), whose sum is σ = 1499021368. Its totient is φ = 669537360.

The previous prime is 1021044979. The next prime is 1021045031. The reversal of 1021045023 is 3205401201.

1021045023 is a `hidden beast` number, since 1 + 0 + 210 + 450 + 2 + 3 = 666.

It is not a de Polignac number, because 1021045023 - 2⁸ = 1021044767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021044987 and 1021045005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021045043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 929365 + ... + 930462.

Almost surely, 2^1021045023 is an apocalyptic number.

1021045023 is a deficient number, since it is larger than the sum of its proper divisors (477976345).

1021045023 is a wasteful number, since it uses less digits than its factorization.

1021045023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859894 (or 1859891 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1021045023 is about 31953.7951267138. The cubic root of 1021045023 is about 1006.9663647359.

Adding to 1021045023 its reverse (3205401201), we get a palindrome (4226446224).

The spelling of 1021045023 in words is "one billion, twenty-one million, forty-five thousand, twenty-three".