1005875420 has 36 divisors (see below), whose sum is σ = 2321832072. Its totient is φ = 365772000.

The previous prime is 1005875417. The next prime is 1005875449. The reversal of 1005875420 is 245785001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205406 + ... + 210245.

Almost surely, 2^1005875420 is an apocalyptic number.

1005875420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005875420 is an abundant number, since it is smaller than the sum of its proper divisors (1315956652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1005875420 is a wasteful number, since it uses less digits than its factorization.

1005875420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415682 (or 415669 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 1005875420 is about 31715.5390936367. The cubic root of 1005875420 is about 1001.9546501866.

The spelling of 1005875420 in words is "one billion, five million, eight hundred seventy-five thousand, four hundred twenty".