1421005204 has 12 divisors (see below), whose sum is σ = 2487023028. Its totient is φ = 710427200.

The previous prime is 1421005181. The next prime is 1421005213. The reversal of 1421005204 is 4025001241.

It can be written as a sum of positive squares in 2 ways, for example, as 1303065604 + 117939600 = 36098^2 + 10860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64494 + ... + 83674.

It is an arithmetic number, because the mean of its divisors is an integer number (207251919).

Almost surely, 2^1421005204 is an apocalyptic number.

It is an amenable number.

1421005204 is a deficient number, since it is larger than the sum of its proper divisors (1066017824).

1421005204 is a wasteful number, since it uses less digits than its factorization.

1421005204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37706 (or 37704 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1421005204 is about 37696.2226754883. Note that the first 3 decimals coincide. The cubic root of 1421005204 is about 1124.2560227403.

Adding to 1421005204 its reverse (4025001241), we get a palindrome (5446006445).

The spelling of 1421005204 in words is "one billion, four hundred twenty-one million, five thousand, two hundred four".