42266139169 has 4 divisors (see below), whose sum is σ = 42266562480. Its totient is φ = 42265715860.

The previous prime is 42266139137. The next prime is 42266139191. The reversal of 42266139169 is 96193166224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42266139169 - 2⁵ = 42266139137 is a prime.

It is a super-2 number, since 2×42266139169² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42266139199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30354 + ... + 292324.

It is an arithmetic number, because the mean of its divisors is an integer number (10566640620).

Almost surely, 2^42266139169 is an apocalyptic number.

It is an amenable number.

42266139169 is a deficient number, since it is larger than the sum of its proper divisors (423311).

42266139169 is a wasteful number, since it uses less digits than its factorization.

42266139169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423310.

The product of its digits is 839808, while the sum is 49.

The spelling of 42266139169 in words is "forty-two billion, two hundred sixty-six million, one hundred thirty-nine thousand, one hundred sixty-nine".