1000806421 has 8 divisors (see below), whose sum is σ = 1015180544. Its totient is φ = 986450400.

The previous prime is 1000806419. The next prime is 1000806427. The reversal of 1000806421 is 1246080001.

1000806421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1000806421 - 2¹ = 1000806419 is a prime.

It is a super-2 number, since 2×1000806421² = 2003226984629658482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000806392 and 1000806401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000806427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138910 + ... + 145936.

It is an arithmetic number, because the mean of its divisors is an integer number (126897568).

Almost surely, 2^1000806421 is an apocalyptic number.

It is an amenable number.

1000806421 is a deficient number, since it is larger than the sum of its proper divisors (14374123).

1000806421 is an equidigital number, since it uses as much as digits as its factorization.

1000806421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9051.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1000806421 is about 31635.5246676896. The cubic root of 1000806421 is about 1000.2687347752.

Adding to 1000806421 its reverse (1246080001), we get a palindrome (2246886422).

The spelling of 1000806421 in words is "one billion, eight hundred six thousand, four hundred twenty-one".