61742 has 4 divisors (see below), whose sum is σ = 92616. Its totient is φ = 30870.

The previous prime is 61729. The next prime is 61751. The reversal of 61742 is 24716.

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

It is a congruent number.

It is an unprimeable number.

61742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434 + ... + 15437.

It is an arithmetic number, because the mean of its divisors is an integer number (23154).

2⁶¹⁷⁴² is an apocalyptic number.

61742 is a deficient number, since it is larger than the sum of its proper divisors (30874).

61742 is a wasteful number, since it uses less digits than its factorization.

61742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30873.

The product of its digits is 336, while the sum is 20.

The square root of 61742 is about 248.4793754017. The cubic root of 61742 is about 39.5239399821.

The spelling of 61742 in words is "sixty-one thousand, seven hundred forty-two".