42820129547 has 8 divisors (see below), whose sum is σ = 46120278960. Its totient is φ = 39520879200.

The previous prime is 42820129543. The next prime is 42820129553. The reversal of 42820129547 is 74592102824.

42820129547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42820129547 - 2² = 42820129543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42820129498 and 42820129507.

It is not an unprimeable number, because it can be changed into a prime (42820129543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124172 + ... + 317897.

It is an arithmetic number, because the mean of its divisors is an integer number (5765034870).

Almost surely, 2^42820129547 is an apocalyptic number.

42820129547 is a deficient number, since it is larger than the sum of its proper divisors (3300149413).

42820129547 is a wasteful number, since it uses less digits than its factorization.

42820129547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449533.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 42820129547 in words is "forty-two billion, eight hundred twenty million, one hundred twenty-nine thousand, five hundred forty-seven".