1020427845 has 8 divisors (see below), whose sum is σ = 1632684576. Its totient is φ = 544228176.

The previous prime is 1020427831. The next prime is 1020427853. The reversal of 1020427845 is 5487240201.

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

It is not a de Polignac number, because 1020427845 - 2⁴ = 1020427829 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 34014247 + ... + 34014276.

It is an arithmetic number, because the mean of its divisors is an integer number (204085572).

Almost surely, 2^1020427845 is an apocalyptic number.

1020427845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020427845 is a deficient number, since it is larger than the sum of its proper divisors (612256731).

1020427845 is an equidigital number, since it uses as much as digits as its factorization.

1020427845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68028531.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 1020427845 is about 31944.1363163883. The cubic root of 1020427845 is about 1006.7634344916.

The spelling of 1020427845 in words is "one billion, twenty million, four hundred twenty-seven thousand, eight hundred forty-five".