64403420042 has 8 divisors (see below), whose sum is σ = 104036293956. Its totient is φ = 29724655392.

The previous prime is 64403420027. The next prime is 64403420083. The reversal of 64403420042 is 24002430446.

It can be written as a sum of positive squares in 2 ways, for example, as 44795299201 + 19608120841 = 211649^2 + 140029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64403419987 and 64403420014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1238527283 + ... + 1238527334.

Almost surely, 2^64403420042 is an apocalyptic number.

64403420042 is a deficient number, since it is larger than the sum of its proper divisors (39632873914).

64403420042 is a wasteful number, since it uses less digits than its factorization.

64403420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477054632.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 64403420042 its reverse (24002430446), we get a palindrome (88405850488).

The spelling of 64403420042 in words is "sixty-four billion, four hundred three million, four hundred twenty thousand, forty-two".