1421146805 has 8 divisors (see below), whose sum is σ = 1836559032. Its totient is φ = 1049462208.

The previous prime is 1421146799. The next prime is 1421146843. The reversal of 1421146805 is 5086411241.

It can be written as a sum of positive squares in 4 ways, for example, as 128097124 + 1293049681 = 11318^2 + 35959^2 .

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 1421146805 - 2⁴ = 1421146789 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, 10931834 + ... + 10931963.

It is an arithmetic number, because the mean of its divisors is an integer number (229569879).

Almost surely, 2^1421146805 is an apocalyptic number.

It is an amenable number.

1421146805 is a deficient number, since it is larger than the sum of its proper divisors (415412227).

1421146805 is a wasteful number, since it uses less digits than its factorization.

1421146805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21863815.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1421146805 is about 37698.1008142320. The cubic root of 1421146805 is about 1124.2933649656.

It can be divided in two parts, 14211 and 46805, that added together give a palindrome (61016).

The spelling of 1421146805 in words is "one billion, four hundred twenty-one million, one hundred forty-six thousand, eight hundred five".