61351642 has 16 divisors (see below), whose sum is σ = 101391264. Its totient is φ = 27610000.

The previous prime is 61351639. The next prime is 61351643. The reversal of 61351642 is 24615316.

61351642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61351642.

It is not an unprimeable number, because it can be changed into a prime (61351643) by changing a digit.

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, 11584 + ... + 16027.

It is an arithmetic number, because the mean of its divisors is an integer number (6336954).

Almost surely, 2^61351642 is an apocalyptic number.

61351642 is a deficient number, since it is larger than the sum of its proper divisors (40039622).

61351642 is a wasteful number, since it uses less digits than its factorization.

61351642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27725.

The product of its digits is 4320, while the sum is 28.

The square root of 61351642 is about 7832.7288986662. The cubic root of 61351642 is about 394.4046835336.

Adding to 61351642 its reverse (24615316), we get a palindrome (85966958).

It can be divided in two parts, 6135 and 1642, that added together give a palindrome (7777).

The spelling of 61351642 in words is "sixty-one million, three hundred fifty-one thousand, six hundred forty-two".