61442 has 8 divisors (see below), whose sum is σ = 95232. Its totient is φ = 29700.

The previous prime is 61441. The next prime is 61463. The reversal of 61442 is 24416.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61442.

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 61442.

It is not an unprimeable number, because it can be changed into a prime (61441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (11904).

2⁶¹⁴⁴² is an apocalyptic number.

61442 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61442 is a deficient number, since it is larger than the sum of its proper divisors (33790).

61442 is a wasteful number, since it uses less digits than its factorization.

61442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

The product of its digits is 192, while the sum is 17.

The square root of 61442 is about 247.8749684821. The cubic root of 61442 is about 39.4598213465.

Subtracting from 61442 its sum of digits (17), we obtain a triangular number (61425 = T₃₅₀).

Adding to 61442 its reverse (24416), we get a palindrome (85858).

It can be divided in two parts, 614 and 42, that added together give a palindrome (656).

The spelling of 61442 in words is "sixty-one thousand, four hundred forty-two".