42513277 has 4 divisors (see below), whose sum is σ = 45014076. Its totient is φ = 40012480.

The previous prime is 42513227. The next prime is 42513281. The reversal of 42513277 is 77231524.

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 27311076 + 15202201 = 5226^2 + 3899^2 .

It is a cyclic number.

It is not a de Polignac number, because 42513277 - 2¹¹ = 42511229 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42513227) 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, 1250374 + ... + 1250407.

It is an arithmetic number, because the mean of its divisors is an integer number (11253519).

Almost surely, 2^42513277 is an apocalyptic number.

It is an amenable number.

42513277 is a deficient number, since it is larger than the sum of its proper divisors (2500799).

42513277 is a wasteful number, since it uses less digits than its factorization.

42513277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500798.

The product of its digits is 11760, while the sum is 31.

The square root of 42513277 is about 6520.2206251016. The cubic root of 42513277 is about 349.0129386587.

The spelling of 42513277 in words is "forty-two million, five hundred thirteen thousand, two hundred seventy-seven".