42029665351873 has 4 divisors (see below), whose sum is σ = 43478964157140. Its totient is φ = 40580366546608.

The previous prime is 42029665351823. The next prime is 42029665351937. The reversal of 42029665351873 is 37815356692024.

42029665351873 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 2 ways, for example, as 29682087808129 + 12347577543744 = 5448127^2 + 3513912^2 .

It is a cyclic number.

It is not a de Polignac number, because 42029665351873 - 2¹⁷ = 42029665220801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42029665351823) by changing a digit.

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, 724649402590 + ... + 724649402647.

It is an arithmetic number, because the mean of its divisors is an integer number (10869741039285).

It is a 1-persistent number, because it is pandigital, but 2⋅42029665351873 = 84059330703746 is not.

Almost surely, 2^{42029665351873} is an apocalyptic number.

It is an amenable number.

42029665351873 is a deficient number, since it is larger than the sum of its proper divisors (1449298805267).

42029665351873 is a wasteful number, since it uses less digits than its factorization.

42029665351873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449298805266.

The product of its (nonzero) digits is 65318400, while the sum is 61.

The spelling of 42029665351873 in words is "forty-two trillion, twenty-nine billion, six hundred sixty-five million, three hundred fifty-one thousand, eight hundred seventy-three".