7404100021 has 12 divisors (see below), whose sum is σ = 7637737536. Its totient is φ = 7174353200.

The previous prime is 7404100019. The next prime is 7404100027. The reversal of 7404100021 is 1200014047.

It is not a de Polignac number, because 7404100021 - 2¹ = 7404100019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7404100027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471726 + ... + 487168.

It is an arithmetic number, because the mean of its divisors is an integer number (636478128).

Almost surely, 2^7404100021 is an apocalyptic number.

It is an amenable number.

7404100021 is a deficient number, since it is larger than the sum of its proper divisors (233637515).

7404100021 is a wasteful number, since it uses less digits than its factorization.

7404100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692 (or 15591 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 7404100021 is about 86047.0802584260. The cubic root of 7404100021 is about 1949.0549899221.

Adding to 7404100021 its reverse (1200014047), we get a palindrome (8604114068).

The spelling of 7404100021 in words is "seven billion, four hundred four million, one hundred thousand, twenty-one".