1004140221 has 16 divisors (see below), whose sum is σ = 1530561024. Its totient is φ = 573628464.

The previous prime is 1004140219. The next prime is 1004140223. The reversal of 1004140221 is 1220414001.

It is an interprime number because it is at equal distance from previous prime (1004140219) and next prime (1004140223).

It is not a de Polignac number, because 1004140221 - 2¹ = 1004140219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004140221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004140223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141070 + ... + 148016.

It is an arithmetic number, because the mean of its divisors is an integer number (95660064).

Almost surely, 2^1004140221 is an apocalyptic number.

It is an amenable number.

1004140221 is a deficient number, since it is larger than the sum of its proper divisors (526420803).

1004140221 is an equidigital number, since it uses as much as digits as its factorization.

1004140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13840.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1004140221 is about 31688.1716260184. The cubic root of 1004140221 is about 1001.3781734321.

Adding to 1004140221 its reverse (1220414001), we get a palindrome (2224554222).

The spelling of 1004140221 in words is "one billion, four million, one hundred forty thousand, two hundred twenty-one".