1000421421 has 16 divisors (see below), whose sum is σ = 1425062400. Its totient is φ = 622412208.

The previous prime is 1000421417. The next prime is 1000421479. The reversal of 1000421421 is 1241240001.

1000421421 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 1000421421 - 2² = 1000421417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000421421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000421221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127161 + ... + 134798.

It is an arithmetic number, because the mean of its divisors is an integer number (89066400).

Almost surely, 2^1000421421 is an apocalyptic number.

It is an amenable number.

1000421421 is a deficient number, since it is larger than the sum of its proper divisors (424640979).

1000421421 is a wasteful number, since it uses less digits than its factorization.

1000421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262048.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1000421421 is about 31629.4391508923. The cubic root of 1000421421 is about 1000.1404539384.

Adding to 1000421421 its reverse (1241240001), we get a palindrome (2241661422).

The spelling of 1000421421 in words is "one billion, four hundred twenty-one thousand, four hundred twenty-one".