838542 has 16 divisors (see below), whose sum is σ = 1775952. Its totient is φ = 263040.

The previous prime is 838517. The next prime is 838547. The reversal of 838542 is 245838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838547) by changing a digit.

838542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4009 + ... + 4212.

It is an arithmetic number, because the mean of its divisors is an integer number (110997).

2⁸³⁸⁵⁴² is an apocalyptic number.

838542 is an abundant number, since it is smaller than the sum of its proper divisors (937410).

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

838542 is a wasteful number, since it uses less digits than its factorization.

838542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243.

The product of its digits is 7680, while the sum is 30.

The square root of 838542 is about 915.7193893328. The cubic root of 838542 is about 94.2992575324.

Subtracting from 838542 its reverse (245838), we obtain a cube (592704 = 84³).

The spelling of 838542 in words is "eight hundred thirty-eight thousand, five hundred forty-two".