2174006421 has 6 divisors (see below), whose sum is σ = 3140231510. Its totient is φ = 1449337608.

The previous prime is 2174006413. The next prime is 2174006423. The reversal of 2174006421 is 1246004712.

2174006421 is a `hidden beast` number, since 2 + 17 + 4 + 0 + 0 + 642 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2035002321 + 139004100 = 45111^2 + 11790^2 .

It is not a de Polignac number, because 2174006421 - 2³ = 2174006413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2174006423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120778126 + ... + 120778143.

Almost surely, 2^2174006421 is an apocalyptic number.

It is an amenable number.

2174006421 is a deficient number, since it is larger than the sum of its proper divisors (966225089).

2174006421 is a wasteful number, since it uses less digits than its factorization.

2174006421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241556275 (or 241556272 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2174006421 is about 46626.2417636249. The cubic root of 2174006421 is about 1295.4488629503.

The spelling of 2174006421 in words is "two billion, one hundred seventy-four million, six thousand, four hundred twenty-one".