1004224402 has 4 divisors (see below), whose sum is σ = 1506336606. Its totient is φ = 502112200.

The previous prime is 1004224373. The next prime is 1004224409. The reversal of 1004224402 is 2044224001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2044224001 = 89 ⋅22968809.

It can be written as a sum of positive squares in only one way, i.e., 724632561 + 279591841 = 26919^2 + 16721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1004224402.

It is not an unprimeable number, because it can be changed into a prime (1004224409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251056099 + ... + 251056102.

Almost surely, 2^1004224402 is an apocalyptic number.

1004224402 is a deficient number, since it is larger than the sum of its proper divisors (502112204).

1004224402 is an equidigital number, since it uses as much as digits as its factorization.

1004224402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502112203.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1004224402 is about 31689.4998698307. The cubic root of 1004224402 is about 1001.4061557991.

Adding to 1004224402 its reverse (2044224001), we get a palindrome (3048448403).

The spelling of 1004224402 in words is "one billion, four million, two hundred twenty-four thousand, four hundred two".