1406104021 has 16 divisors (see below), whose sum is σ = 1622615040. Its totient is φ = 1193546880.

The previous prime is 1406104019. The next prime is 1406104039. The reversal of 1406104021 is 1204016041.

It is a cyclic number.

It is not a de Polignac number, because 1406104021 - 2¹ = 1406104019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406104021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406104001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457831 + ... + 460891.

It is an arithmetic number, because the mean of its divisors is an integer number (101413440).

Almost surely, 2^1406104021 is an apocalyptic number.

It is an amenable number.

1406104021 is a deficient number, since it is larger than the sum of its proper divisors (216511019).

1406104021 is a wasteful number, since it uses less digits than its factorization.

1406104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1406104021 is about 37498.0535628184. The cubic root of 1406104021 is about 1120.3124184247.

The spelling of 1406104021 in words is "one billion, four hundred six million, one hundred four thousand, twenty-one".