742623 has 8 divisors (see below), whose sum is σ = 1131648. Its totient is φ = 424344.

The previous prime is 742619. The next prime is 742657. The reversal of 742623 is 326247.

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

It is not a de Polignac number, because 742623 - 2² = 742619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 742593 and 742602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17661 + ... + 17702.

It is an arithmetic number, because the mean of its divisors is an integer number (141456).

2⁷⁴²⁶²³ is an apocalyptic number.

742623 is a deficient number, since it is larger than the sum of its proper divisors (389025).

742623 is a wasteful number, since it uses less digits than its factorization.

742623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35373.

The product of its digits is 2016, while the sum is 24.

The square root of 742623 is about 861.7557658641. The cubic root of 742623 is about 90.5571609626.

The spelling of 742623 in words is "seven hundred forty-two thousand, six hundred twenty-three".