42155783073 has 8 divisors (see below), whose sum is σ = 62453012000. Its totient is φ = 28103855364.

The previous prime is 42155783063. The next prime is 42155783123. The reversal of 42155783073 is 37038755124.

42155783073 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 578 + 3 + 0 + 73 = 666.

It is not a de Polignac number, because 42155783073 - 2⁸ = 42155782817 is a prime.

It is a super-2 number, since 2×42155783073² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42155783063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780662623 + ... + 780662676.

It is an arithmetic number, because the mean of its divisors is an integer number (7806626500).

Almost surely, 2^42155783073 is an apocalyptic number.

It is an amenable number.

42155783073 is a deficient number, since it is larger than the sum of its proper divisors (20297228927).

42155783073 is a wasteful number, since it uses less digits than its factorization.

42155783073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561325308 (or 1561325302 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 42155783073 in words is "forty-two billion, one hundred fifty-five million, seven hundred eighty-three thousand, seventy-three".