61240642 has 16 divisors (see below), whose sum is σ = 93375360. Its totient is φ = 30118608.

The previous prime is 61240631. The next prime is 61240679. The reversal of 61240642 is 24604216.

61240642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 7 ways as a sum of consecutive naturals, for example, 54268 + ... + 55384.

It is an arithmetic number, because the mean of its divisors is an integer number (5835960).

Almost surely, 2^61240642 is an apocalyptic number.

61240642 is a deficient number, since it is larger than the sum of its proper divisors (32134718).

61240642 is a wasteful number, since it uses less digits than its factorization.

61240642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 61240642 is about 7825.6400377222. The cubic root of 61240642 is about 394.1666820325.

Adding to 61240642 its reverse (24604216), we get a palindrome (85844858).

The spelling of 61240642 in words is "sixty-one million, two hundred forty thousand, six hundred forty-two".