742818 has 8 divisors (see below), whose sum is σ = 1485648. Its totient is φ = 247604.

The previous prime is 742817. The next prime is 742891. The reversal of 742818 is 818247.

742818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

742818 is an admirable number.

It is a super-2 number, since 2×742818² = 1103557162248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (742817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61896 + ... + 61907.

It is an arithmetic number, because the mean of its divisors is an integer number (185706).

2⁷⁴²⁸¹⁸ is an apocalyptic number.

742818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

742818 is a wasteful number, since it uses less digits than its factorization.

742818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123808.

The product of its digits is 3584, while the sum is 30.

The square root of 742818 is about 861.8688995433. The cubic root of 742818 is about 90.5650865188.

The spelling of 742818 in words is "seven hundred forty-two thousand, eight hundred eighteen".