42769135249 has 3 divisors (see below), whose sum is σ = 42769342057. Its totient is φ = 42768928442.

The previous prime is 42769135229. The next prime is 42769135273. The reversal of 42769135249 is 94253196724.

The square root of 42769135249 is 206807.

It is a perfect power (a square), and thus also a powerful number.

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 is not a de Polignac number, because 42769135249 - 2⁵ = 42769135217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42769135196 and 42769135205.

It is not an unprimeable number, because it can be changed into a prime (42769135229) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103404 + ... + 310210.

Almost surely, 2^42769135249 is an apocalyptic number.

42769135249 is the 206807-th square number.

42769135249 is the 103404-th centered octagonal number.

It is an amenable number.

42769135249 is a deficient number, since it is larger than the sum of its proper divisors (206808).

42769135249 is an frugal number, since it uses more digits than its factorization.

42769135249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413614 (or 206807 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 42769135249 in words is "forty-two billion, seven hundred sixty-nine million, one hundred thirty-five thousand, two hundred forty-nine".