42031972065 has 64 divisors (see below), whose sum is σ = 73234008576. Its totient is φ = 20499443712.

The previous prime is 42031972051. The next prime is 42031972069. The reversal of 42031972065 is 56027913024.

It is not a de Polignac number, because 42031972065 - 2¹⁰ = 42031971041 is a prime.

It is a super-3 number, since 3×42031972065³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42031972069) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7762299 + ... + 7767711.

It is an arithmetic number, because the mean of its divisors is an integer number (1144281384).

Almost surely, 2^42031972065 is an apocalyptic number.

It is an amenable number.

42031972065 is a deficient number, since it is larger than the sum of its proper divisors (31202036511).

42031972065 is a wasteful number, since it uses less digits than its factorization.

42031972065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 42031972065 in words is "forty-two billion, thirty-one million, nine hundred seventy-two thousand, sixty-five".