42940236417 has 32 divisors (see below), whose sum is σ = 65871697920. Its totient is φ = 24660313920.

The previous prime is 42940236343. The next prime is 42940236421. The reversal of 42940236417 is 71463204924.

It is not a de Polignac number, because 42940236417 - 2⁸ = 42940236161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42940236497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382809 + ... + 482102.

It is an arithmetic number, because the mean of its divisors is an integer number (2058490560).

Almost surely, 2^42940236417 is an apocalyptic number.

It is an amenable number.

42940236417 is a deficient number, since it is larger than the sum of its proper divisors (22931461503).

42940236417 is a wasteful number, since it uses less digits than its factorization.

42940236417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865013.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 42940236417 in words is "forty-two billion, nine hundred forty million, two hundred thirty-six thousand, four hundred seventeen".