1048285921 has 4 divisors (see below), whose sum is σ = 1048586500. Its totient is φ = 1047985344.

The previous prime is 1048285919. The next prime is 1048285967. The reversal of 1048285921 is 1295828401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1295828401 = 7 ⋅185118343.

It can be written as a sum of positive squares in 2 ways, for example, as 300536896 + 747749025 = 17336^2 + 27345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1048285921 - 2¹ = 1048285919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048283921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144996 + ... + 152053.

It is an arithmetic number, because the mean of its divisors is an integer number (262146625).

Almost surely, 2^1048285921 is an apocalyptic number.

It is an amenable number.

1048285921 is a deficient number, since it is larger than the sum of its proper divisors (300579).

1048285921 is an equidigital number, since it uses as much as digits as its factorization.

1048285921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300578.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 1048285921 is about 32377.2438759077. The cubic root of 1048285921 is about 1015.8429814103.

The spelling of 1048285921 in words is "one billion, forty-eight million, two hundred eighty-five thousand, nine hundred twenty-one".