42715237 has 4 divisors (see below), whose sum is σ = 45227916. Its totient is φ = 40202560.

The previous prime is 42715229. The next prime is 42715273. The reversal of 42715237 is 73251724.

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 15163236 + 27552001 = 3894^2 + 5249^2 .

It is a cyclic number.

It is not a de Polignac number, because 42715237 - 2³ = 42715229 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 junction number, because it is equal to n+sod(n) for n = 42715199 and 42715208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42715217) 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, 1256314 + ... + 1256347.

It is an arithmetic number, because the mean of its divisors is an integer number (11306979).

Almost surely, 2^42715237 is an apocalyptic number.

It is an amenable number.

42715237 is a deficient number, since it is larger than the sum of its proper divisors (2512679).

42715237 is a wasteful number, since it uses less digits than its factorization.

42715237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512678.

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

The square root of 42715237 is about 6535.6894816079. The cubic root of 42715237 is about 349.5647296576.

The spelling of 42715237 in words is "forty-two million, seven hundred fifteen thousand, two hundred thirty-seven".