742606 has 4 divisors (see below), whose sum is σ = 1113912. Its totient is φ = 371302.

The previous prime is 742591. The next prime is 742607. The reversal of 742606 is 606247.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742607) by changing a digit.

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 as a sum of consecutive naturals, namely, 185650 + ... + 185653.

It is an arithmetic number, because the mean of its divisors is an integer number (278478).

2⁷⁴²⁶⁰⁶ is an apocalyptic number.

742606 is a deficient number, since it is larger than the sum of its proper divisors (371306).

742606 is a wasteful number, since it uses less digits than its factorization.

742606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371305.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 742606 is about 861.7459022241. The cubic root of 742606 is about 90.5564699509.

The spelling of 742606 in words is "seven hundred forty-two thousand, six hundred six".