4129720042019 has 16 divisors (see below), whose sum is σ = 5008205497344. Its totient is φ = 3353709031200.

The previous prime is 4129720041983. The next prime is 4129720042051. The reversal of 4129720042019 is 9102400279214.

It is a de Polignac number, because none of the positive numbers 2^k-4129720042019 is a prime.

It is a super-2 number, since 2×4129720042019² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4129720042079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465788489 + ... + 465797354.

It is an arithmetic number, because the mean of its divisors is an integer number (313012843584).

Almost surely, 2^{4129720042019} is an apocalyptic number.

4129720042019 is a deficient number, since it is larger than the sum of its proper divisors (878485455325).

4129720042019 is a wasteful number, since it uses less digits than its factorization.

4129720042019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931585898.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 4129720042019 in words is "four trillion, one hundred twenty-nine billion, seven hundred twenty million, forty-two thousand, nineteen".