5287642 has 4 divisors (see below), whose sum is σ = 7931466. Its totient is φ = 2643820.

The previous prime is 5287627. The next prime is 5287649. The reversal of 5287642 is 2467825.

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

It can be written as a sum of positive squares in only one way, i.e., 5202961 + 84681 = 2281^2 + 291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5287598 and 5287607.

It is not an unprimeable number, because it can be changed into a prime (5287649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321909 + ... + 1321912.

Almost surely, 2^5287642 is an apocalyptic number.

5287642 is a deficient number, since it is larger than the sum of its proper divisors (2643824).

5287642 is a wasteful number, since it uses less digits than its factorization.

5287642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643823.

The product of its digits is 26880, while the sum is 34.

The square root of 5287642 is about 2299.4873341682. The cubic root of 5287642 is about 174.2157231022.

It can be divided in two parts, 5287 and 642, that added together give a square (5929 = 77²).

The spelling of 5287642 in words is "five million, two hundred eighty-seven thousand, six hundred forty-two".