42031972066 has 32 divisors (see below), whose sum is σ = 74474588160. Its totient is φ = 17417994576.

The previous prime is 42031972051. The next prime is 42031972069. The reversal of 42031972066 is 66027913024.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 330196 + ... + 439423.

It is an arithmetic number, because the mean of its divisors is an integer number (2327330880).

Almost surely, 2^42031972066 is an apocalyptic number.

42031972066 is a deficient number, since it is larger than the sum of its proper divisors (32442616094).

42031972066 is a wasteful number, since it uses less digits than its factorization.

42031972066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769758.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 42031972066 in words is "forty-two billion, thirty-one million, nine hundred seventy-two thousand, sixty-six".