42499161771 has 16 divisors (see below), whose sum is σ = 61902973440. Its totient is φ = 25721229920.

The previous prime is 42499161751. The next prime is 42499161787. The reversal of 42499161771 is 17716199424.

It is a cyclic number.

It is not a de Polignac number, because 42499161771 - 2⁵ = 42499161739 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42499161751) 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, 871860 + ... + 919313.

It is an arithmetic number, because the mean of its divisors is an integer number (3868935840).

Almost surely, 2^42499161771 is an apocalyptic number.

42499161771 is a deficient number, since it is larger than the sum of its proper divisors (19403811669).

42499161771 is a wasteful number, since it uses less digits than its factorization.

42499161771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791906.

The product of its digits is 762048, while the sum is 51.

The spelling of 42499161771 in words is "forty-two billion, four hundred ninety-nine million, one hundred sixty-one thousand, seven hundred seventy-one".