1004752021 has 8 divisors (see below), whose sum is σ = 1236617984. Its totient is φ = 794968560.

The previous prime is 1004751997. The next prime is 1004752069. The reversal of 1004752021 is 1202574001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1004752021 - 2⁵ = 1004751989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1004751983 and 1004752001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004752121) 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 7 ways as a sum of consecutive naturals, for example, 5520525 + ... + 5520706.

It is an arithmetic number, because the mean of its divisors is an integer number (154577248).

Almost surely, 2^1004752021 is an apocalyptic number.

It is an amenable number.

1004752021 is a deficient number, since it is larger than the sum of its proper divisors (231865963).

1004752021 is a wasteful number, since it uses less digits than its factorization.

1004752021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041251.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1004752021 is about 31697.8236003673. The cubic root of 1004752021 is about 1001.5815045249.

The spelling of 1004752021 in words is "one billion, four million, seven hundred fifty-two thousand, twenty-one".