1004421402 has 12 divisors (see below), whose sum is σ = 2176246410. Its totient is φ = 334807128.

The previous prime is 1004421371. The next prime is 1004421413. The reversal of 1004421402 is 2041244001.

It can be written as a sum of positive squares in only one way, i.e., 504496521 + 499924881 = 22461^2 + 22359^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 55801189 = 1004421402 / (1 + 0 + 0 + 4 + 4 + 2 + 1 + 4 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27900577 + ... + 27900612.

Almost surely, 2^1004421402 is an apocalyptic number.

1004421402 is an abundant number, since it is smaller than the sum of its proper divisors (1171825008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1004421402 is a wasteful number, since it uses less digits than its factorization.

1004421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55801197 (or 55801194 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1004421402 is about 31692.6080024980. The cubic root of 1004421402 is about 1001.4716338980.

Adding to 1004421402 its reverse (2041244001), we get a palindrome (3045665403).

The spelling of 1004421402 in words is "one billion, four million, four hundred twenty-one thousand, four hundred two".