42121472516 has 12 divisors (see below), whose sum is σ = 74028941532. Its totient is φ = 20970346368.

The previous prime is 42121472507. The next prime is 42121472527. The reversal of 42121472516 is 61527412124.

It can be written as a sum of positive squares in 2 ways, for example, as 7655550016 + 34465922500 = 87496^2 + 185650^2 .

It is a super-2 number, since 2×42121472516² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22596425 + ... + 22598288.

It is an arithmetic number, because the mean of its divisors is an integer number (6169078461).

Almost surely, 2^42121472516 is an apocalyptic number.

It is an amenable number.

42121472516 is a deficient number, since it is larger than the sum of its proper divisors (31907469016).

42121472516 is a wasteful number, since it uses less digits than its factorization.

42121472516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45194950 (or 45194948 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The spelling of 42121472516 in words is "forty-two billion, one hundred twenty-one million, four hundred seventy-two thousand, five hundred sixteen".