42723449215 has 4 divisors (see below), whose sum is σ = 51268139064. Its totient is φ = 34178759368.

The previous prime is 42723449183. The next prime is 42723449221. The reversal of 42723449215 is 51294432724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42723449215 - 2⁵ = 42723449183 is a prime.

It is a super-2 number, since 2×42723449215² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 4272344917 + ... + 4272344926.

It is an arithmetic number, because the mean of its divisors is an integer number (12817034766).

Almost surely, 2^42723449215 is an apocalyptic number.

42723449215 is a deficient number, since it is larger than the sum of its proper divisors (8544689849).

42723449215 is an equidigital number, since it uses as much as digits as its factorization.

42723449215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8544689848.

The product of its digits is 483840, while the sum is 43.

The spelling of 42723449215 in words is "forty-two billion, seven hundred twenty-three million, four hundred forty-nine thousand, two hundred fifteen".