743642 has 8 divisors (see below), whose sum is σ = 1141536. Its totient is φ = 363132.

The previous prime is 743609. The next prime is 743657. The reversal of 743642 is 246347.

It is a happy number.

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

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 4238 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (142692).

2⁷⁴³⁶⁴² is an apocalyptic number.

743642 is a deficient number, since it is larger than the sum of its proper divisors (397894).

743642 is a wasteful number, since it uses less digits than its factorization.

743642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692.

The product of its digits is 4032, while the sum is 26.

The square root of 743642 is about 862.3467979879. The cubic root of 743642 is about 90.5985617686.

Adding to 743642 its reverse (246347), we get a palindrome (989989).

The spelling of 743642 in words is "seven hundred forty-three thousand, six hundred forty-two".