1421676173 has 4 divisors (see below), whose sum is σ = 1421756508. Its totient is φ = 1421595840.

The previous prime is 1421676133. The next prime is 1421676181. The reversal of 1421676173 is 3716761241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 747858409 + 673817764 = 27347^2 + 25958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421676173 - 2⁸ = 1421675917 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 (1421676103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686 + ... + 53327.

It is an arithmetic number, because the mean of its divisors is an integer number (355439127).

Almost surely, 2^1421676173 is an apocalyptic number.

It is an amenable number.

1421676173 is a deficient number, since it is larger than the sum of its proper divisors (80335).

1421676173 is an equidigital number, since it uses as much as digits as its factorization.

1421676173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80334.

The product of its digits is 42336, while the sum is 38.

The square root of 1421676173 is about 37705.1213099759. The cubic root of 1421676173 is about 1124.4329449735.

The spelling of 1421676173 in words is "one billion, four hundred twenty-one million, six hundred seventy-six thousand, one hundred seventy-three".