742489 has 4 divisors (see below), whose sum is σ = 810000. Its totient is φ = 674980.

The previous prime is 742457. The next prime is 742499. The reversal of 742489 is 984247.

It is a happy number.

742489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984247 = 11 ⋅89477.

It is a cyclic number.

It is not a de Polignac number, because 742489 - 2⁵ = 742457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742409) 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, 33739 + ... + 33760.

It is an arithmetic number, because the mean of its divisors is an integer number (202500).

2⁷⁴²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

742489 is a deficient number, since it is larger than the sum of its proper divisors (67511).

742489 is a wasteful number, since it uses less digits than its factorization.

742489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67510.

The product of its digits is 16128, while the sum is 34.

The square root of 742489 is about 861.6780141097. The cubic root of 742489 is about 90.5517138786.

The spelling of 742489 in words is "seven hundred forty-two thousand, four hundred eighty-nine".