1406241605 has 8 divisors (see below), whose sum is σ = 1687892472. Its totient is φ = 1124724928.

The previous prime is 1406241589. The next prime is 1406241611. The reversal of 1406241605 is 5061426041.

It can be written as a sum of positive squares in 4 ways, for example, as 691374436 + 714867169 = 26294^2 + 26737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1406241605 - 2⁴ = 1406241589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8834 + ... + 53763.

It is an arithmetic number, because the mean of its divisors is an integer number (210986559).

Almost surely, 2^1406241605 is an apocalyptic number.

It is an amenable number.

1406241605 is a deficient number, since it is larger than the sum of its proper divisors (281650867).

1406241605 is an equidigital number, since it uses as much as digits as its factorization.

1406241605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67095.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1406241605 is about 37499.8880664996. Note that the first 3 decimals coincide. The cubic root of 1406241605 is about 1120.3489572190.

Adding to 1406241605 its reverse (5061426041), we get a palindrome (6467667646).

The spelling of 1406241605 in words is "one billion, four hundred six million, two hundred forty-one thousand, six hundred five".