64100042 has 4 divisors (see below), whose sum is σ = 96150066. Its totient is φ = 32050020.

The previous prime is 64099999. The next prime is 64100083. The reversal of 64100042 is 24000146.

64100042 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, and also an emirpimes, since its reverse is a distinct semiprime: 24000146 = 2 ⋅12000073.

It can be written as a sum of positive squares in only one way, i.e., 61606801 + 2493241 = 7849^2 + 1579^2 .

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, 16025009 + ... + 16025012.

Almost surely, 2^64100042 is an apocalyptic number.

64100042 is a deficient number, since it is larger than the sum of its proper divisors (32050024).

64100042 is a wasteful number, since it uses less digits than its factorization.

64100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32050023.

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

The square root of 64100042 is about 8006.2501834504. The cubic root of 64100042 is about 400.2083123294.

Adding to 64100042 its reverse (24000146), we get a palindrome (88100188).

The spelling of 64100042 in words is "sixty-four million, one hundred thousand, forty-two".