42903251161 has 9 divisors (see below), whose sum is σ = 43933325151. Its totient is φ = 41896801632.

The previous prime is 42903251143. The next prime is 42903251177. The reversal of 42903251161 is 16115230924.

The square root of 42903251161 is 207131.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3914379225 + 38988871936 = 62565^2 + 197456^2 .

It is not a de Polignac number, because 42903251161 - 2³⁵ = 8543512793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42903251761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8904225 + ... + 8909041.

Almost surely, 2^42903251161 is an apocalyptic number.

42903251161 is the 207131-st square number.

42903251161 is the 103566-th centered octagonal number.

It is an amenable number.

42903251161 is a deficient number, since it is larger than the sum of its proper divisors (1030073990).

42903251161 is an frugal number, since it uses more digits than its factorization.

42903251161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9720 (or 4860 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 42903251161 in words is "forty-two billion, nine hundred three million, two hundred fifty-one thousand, one hundred sixty-one".