1004022002 has 4 divisors (see below), whose sum is σ = 1506033006. Its totient is φ = 502011000.

The previous prime is 1004021987. The next prime is 1004022029. The reversal of 1004022002 is 2002204001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002204001 = 7 ⋅286029143.

It can be written as a sum of positive squares in only one way, i.e., 524455801 + 479566201 = 22901^2 + 21899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251005499 + ... + 251005502.

Almost surely, 2^1004022002 is an apocalyptic number.

1004022002 is a deficient number, since it is larger than the sum of its proper divisors (502011004).

1004022002 is an equidigital number, since it uses as much as digits as its factorization.

1004022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502011003.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1004022002 is about 31686.3062220891. The cubic root of 1004022002 is about 1001.3388739499.

Adding to 1004022002 its reverse (2002204001), we get a palindrome (3006226003).

The spelling of 1004022002 in words is "one billion, four million, twenty-two thousand, two".