42610642 has 4 divisors (see below), whose sum is σ = 63915966. Its totient is φ = 21305320.

The previous prime is 42610627. The next prime is 42610649. The reversal of 42610642 is 24601624.

42610642 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., 31911201 + 10699441 = 5649^2 + 3271^2 .

It is not an unprimeable number, because it can be changed into a prime (42610649) 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 as a sum of consecutive naturals, namely, 10652659 + ... + 10652662.

Almost surely, 2^42610642 is an apocalyptic number.

42610642 is a deficient number, since it is larger than the sum of its proper divisors (21305324).

42610642 is a wasteful number, since it uses less digits than its factorization.

42610642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21305323.

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

The square root of 42610642 is about 6527.6827435163. The cubic root of 42610642 is about 349.2791749834.

The spelling of 42610642 in words is "forty-two million, six hundred ten thousand, six hundred forty-two".