42857137 has 4 divisors (see below), whose sum is σ = 44015476. Its totient is φ = 41698800.

The previous prime is 42857093. The next prime is 42857147. The reversal of 42857137 is 73175824.

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 34000561 + 8856576 = 5831^2 + 2976^2 .

It is a cyclic number.

It is not a de Polignac number, because 42857137 - 2²³ = 34468529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1158301 = 42857137 / (4 + 2 + 8 + 5 + 7 + 1 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42857096 and 42857105.

It is not an unprimeable number, because it can be changed into a prime (42857147) 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, 579114 + ... + 579187.

It is an arithmetic number, because the mean of its divisors is an integer number (11003869).

Almost surely, 2^42857137 is an apocalyptic number.

It is an amenable number.

42857137 is a deficient number, since it is larger than the sum of its proper divisors (1158339).

42857137 is a wasteful number, since it uses less digits than its factorization.

42857137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158338.

The product of its digits is 47040, while the sum is 37.

The square root of 42857137 is about 6546.5362597331. The cubic root of 42857137 is about 349.9513864454.

The spelling of 42857137 in words is "forty-two million, eight hundred fifty-seven thousand, one hundred thirty-seven".