742838 has 8 divisors (see below), whose sum is σ = 1141560. Its totient is φ = 362320.

The previous prime is 742817. The next prime is 742891. The reversal of 742838 is 838247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

742838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448 + ... + 4611.

It is an arithmetic number, because the mean of its divisors is an integer number (142695).

2⁷⁴²⁸³⁸ is an apocalyptic number.

742838 is a deficient number, since it is larger than the sum of its proper divisors (398722).

742838 is a wasteful number, since it uses less digits than its factorization.

742838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102.

The product of its digits is 10752, while the sum is 32.

The square root of 742838 is about 861.8805021579. The cubic root of 742838 is about 90.5658993179.

It can be divided in two parts, 74 and 2838, that multiplied together give a palindrome (210012).

The spelling of 742838 in words is "seven hundred forty-two thousand, eight hundred thirty-eight".