42558777942 has 16 divisors (see below), whose sum is σ = 90124471152. Its totient is φ = 13351773440.

The previous prime is 42558777941. The next prime is 42558777971. The reversal of 42558777942 is 24977785524.

It is a super-2 number, since 2×42558777942² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42558777941) 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 7 ways as a sum of consecutive naturals, for example, 208621359 + ... + 208621562.

It is an arithmetic number, because the mean of its divisors is an integer number (5632779447).

Almost surely, 2^42558777942 is an apocalyptic number.

42558777942 is an abundant number, since it is smaller than the sum of its proper divisors (47565693210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42558777942 is a wasteful number, since it uses less digits than its factorization.

42558777942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417242943.

The product of its digits is 39513600, while the sum is 60.

The spelling of 42558777942 in words is "forty-two billion, five hundred fifty-eight million, seven hundred seventy-seven thousand, nine hundred forty-two".