1000420065 has 48 divisors (see below), whose sum is σ = 1856365056. Its totient is φ = 516326400.

The previous prime is 1000420061. The next prime is 1000420111. The reversal of 1000420065 is 5600240001.

It is a happy number.

1000420065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000420065 - 2² = 1000420061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000420061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24385 + ... + 50945.

It is an arithmetic number, because the mean of its divisors is an integer number (38674272).

Almost surely, 2^1000420065 is an apocalyptic number.

1000420065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000420065 is a deficient number, since it is larger than the sum of its proper divisors (855944991).

1000420065 is an equidigital number, since it uses as much as digits as its factorization.

1000420065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26612 (or 26600 counting only the distinct ones).

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

The square root of 1000420065 is about 31629.4177151588. The cubic root of 1000420065 is about 1000.1400020652.

Adding to 1000420065 its reverse (5600240001), we get a palindrome (6600660066).

The spelling of 1000420065 in words is "one billion, four hundred twenty thousand, sixty-five".