42723399253 has 4 divisors (see below), whose sum is σ = 43146403308. Its totient is φ = 42300395200.

The previous prime is 42723399223. The next prime is 42723399263. The reversal of 42723399253 is 35299332724.

It is a happy number.

42723399253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38423056324 + 4300342929 = 196018^2 + 65577^2 .

It is a cyclic number.

It is not a de Polignac number, because 42723399253 - 2⁹ = 42723398741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42723399197 and 42723399206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42723399223) 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, 211501876 + ... + 211502077.

It is an arithmetic number, because the mean of its divisors is an integer number (10786600827).

Almost surely, 2^42723399253 is an apocalyptic number.

It is an amenable number.

42723399253 is a deficient number, since it is larger than the sum of its proper divisors (423004055).

42723399253 is a wasteful number, since it uses less digits than its factorization.

42723399253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423004054.

The product of its digits is 2449440, while the sum is 49.

The spelling of 42723399253 in words is "forty-two billion, seven hundred twenty-three million, three hundred ninety-nine thousand, two hundred fifty-three".