1000200421 has 16 divisors (see below), whose sum is σ = 1104088320. Its totient is φ = 898535680.

The previous prime is 1000200419. The next prime is 1000200431. The reversal of 1000200421 is 1240020001.

It is a cyclic number.

It is not a de Polignac number, because 1000200421 - 2¹ = 1000200419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000200398 and 1000200407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000200431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358785 + ... + 361561.

It is an arithmetic number, because the mean of its divisors is an integer number (69005520).

Almost surely, 2^1000200421 is an apocalyptic number.

1000200421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000200421 is a deficient number, since it is larger than the sum of its proper divisors (103887899).

1000200421 is a wasteful number, since it uses less digits than its factorization.

1000200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1000200421 is about 31625.9453771741. The cubic root of 1000200421 is about 1000.0668025373.

Adding to 1000200421 its reverse (1240020001), we get a palindrome (2240220422).

The spelling of 1000200421 in words is "one billion, two hundred thousand, four hundred twenty-one".