1421723803172 has 12 divisors (see below), whose sum is σ = 2618964900720. Its totient is φ = 673448117256.

The previous prime is 1421723803169. The next prime is 1421723803183. The reversal of 1421723803172 is 2713083271241.

It is a super-3 number, since 3×1421723803172³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9353445998 + ... + 9353446149.

It is an arithmetic number, because the mean of its divisors is an integer number (218247075060).

Almost surely, 2^{1421723803172} is an apocalyptic number.

It is an amenable number.

1421723803172 is a deficient number, since it is larger than the sum of its proper divisors (1197241097548).

1421723803172 is a wasteful number, since it uses less digits than its factorization.

1421723803172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706892170 (or 18706892168 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 1421723803172 in words is "one trillion, four hundred twenty-one billion, seven hundred twenty-three million, eight hundred three thousand, one hundred seventy-two".