642267 has 6 divisors (see below), whose sum is σ = 927732. Its totient is φ = 428172.

The previous prime is 642253. The next prime is 642281. The reversal of 642267 is 762246.

It is an interprime number because it is at equal distance from previous prime (642253) and next prime (642281).

It is not a de Polignac number, because 642267 - 2⁸ = 642011 is a prime.

It is a d-powerful number, because it can be written as 6 + 4⁴ + 2⁵ + 2¹⁹ + 6² + 7⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 642267.

It is not an unprimeable number, because it can be changed into a prime (642217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35673 + ... + 35690.

It is an arithmetic number, because the mean of its divisors is an integer number (154622).

2⁶⁴²²⁶⁷ is an apocalyptic number.

642267 is a deficient number, since it is larger than the sum of its proper divisors (285465).

642267 is a wasteful number, since it uses less digits than its factorization.

642267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71369 (or 71366 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 642267 is about 801.4156225081. The cubic root of 642267 is about 86.2790198505.

It can be divided in two parts, 642 and 267, that added together give a palindrome (909).

The spelling of 642267 in words is "six hundred forty-two thousand, two hundred sixty-seven".