42121771074 has 24 divisors (see below), whose sum is σ = 91419335280. Its totient is φ = 14016667608.

The previous prime is 42121771039. The next prime is 42121771151. The reversal of 42121771074 is 47017712124.

It is a happy number.

42121771074 is a `hidden beast` number, since 421 + 217 + 7 + 10 + 7 + 4 = 666.

It is a super-2 number, since 2×42121771074² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1982704 + ... + 2003835.

It is an arithmetic number, because the mean of its divisors is an integer number (3809138970).

Almost surely, 2^42121771074 is an apocalyptic number.

42121771074 is an abundant number, since it is smaller than the sum of its proper divisors (49297564206).

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

42121771074 is a wasteful number, since it uses less digits than its factorization.

42121771074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987134 (or 3987131 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The spelling of 42121771074 in words is "forty-two billion, one hundred twenty-one million, seven hundred seventy-one thousand, seventy-four".