169142726 has 4 divisors (see below), whose sum is σ = 253714092. Its totient is φ = 84571362.

The previous prime is 169142689. The next prime is 169142737. The reversal of 169142726 is 627241961.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×169142726² = 57218523517422152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 169142726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42285680 + ... + 42285683.

It is an arithmetic number, because the mean of its divisors is an integer number (63428523).

Almost surely, 2^169142726 is an apocalyptic number.

169142726 is a deficient number, since it is larger than the sum of its proper divisors (84571366).

169142726 is an equidigital number, since it uses as much as digits as its factorization.

169142726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84571365.

The product of its digits is 36288, while the sum is 38.

The square root of 169142726 is about 13005.4883030204. The cubic root of 169142726 is about 553.0330785825.

The spelling of 169142726 in words is "one hundred sixty-nine million, one hundred forty-two thousand, seven hundred twenty-six".