4387842 has 12 divisors (see below), whose sum is σ = 9507030. Its totient is φ = 1462608.

The previous prime is 4387837. The next prime is 4387847. The reversal of 4387842 is 2487834.

It is an interprime number because it is at equal distance from previous prime (4387837) and next prime (4387847).

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 1535121 = 1689^2 + 1239^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 4⁶ + 3¹¹ + 8⁴ + 7 + 8⁴ + 4⁶ + 2²² .

It is a junction number, because it is equal to n+sod(n) for n = 4387797 and 4387806.

It is not an unprimeable number, because it can be changed into a prime (4387847) 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, 121867 + ... + 121902.

Almost surely, 2^4387842 is an apocalyptic number.

4387842 is an abundant number, since it is smaller than the sum of its proper divisors (5119188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4387842 is a wasteful number, since it uses less digits than its factorization.

4387842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243777 (or 243774 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 4387842 is about 2094.7176420702. The cubic root of 4387842 is about 163.7131859824.

The spelling of 4387842 in words is "four million, three hundred eighty-seven thousand, eight hundred forty-two".