609542 has 4 divisors (see below), whose sum is σ = 914316. Its totient is φ = 304770.

The previous prime is 609541. The next prime is 609571. The reversal of 609542 is 245906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245906 = 2 ⋅122953.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 609542.

It is not an unprimeable number, because it can be changed into a prime (609541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152384 + ... + 152387.

It is an arithmetic number, because the mean of its divisors is an integer number (228579).

2⁶⁰⁹⁵⁴² is an apocalyptic number.

609542 is a deficient number, since it is larger than the sum of its proper divisors (304774).

609542 is a wasteful number, since it uses less digits than its factorization.

609542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304773.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 609542 is about 780.7317080790. The cubic root of 609542 is about 84.7880300833.

It can be divided in two parts, 609 and 542, that multiplied together give a triangular number (330078 = T₈₁₂).

The spelling of 609542 in words is "six hundred nine thousand, five hundred forty-two".