61005442 has 4 divisors (see below), whose sum is σ = 91508166. Its totient is φ = 30502720.

The previous prime is 61005419. The next prime is 61005457. The reversal of 61005442 is 24450016.

61005442 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.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 958441 = 7749^2 + 979^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251359 + ... + 15251362.

Almost surely, 2^61005442 is an apocalyptic number.

61005442 is a deficient number, since it is larger than the sum of its proper divisors (30502724).

61005442 is a wasteful number, since it uses less digits than its factorization.

61005442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30502723.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 61005442 is about 7810.5980564871. The cubic root of 61005442 is about 393.6614242013.

Adding to 61005442 its reverse (24450016), we get a palindrome (85455458).

The spelling of 61005442 in words is "sixty-one million, five thousand, four hundred forty-two".