159139426 has 4 divisors (see below), whose sum is σ = 238709142. Its totient is φ = 79569712.

The previous prime is 159139411. The next prime is 159139427. The reversal of 159139426 is 624931951.

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

It can be written as a sum of positive squares in only one way, i.e., 141491025 + 17648401 = 11895^2 + 4201^2 .

It is not an unprimeable number, because it can be changed into a prime (159139427) by changing a digit.

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, 39784855 + ... + 39784858.

Almost surely, 2^159139426 is an apocalyptic number.

159139426 is a deficient number, since it is larger than the sum of its proper divisors (79569716).

159139426 is an equidigital number, since it uses as much as digits as its factorization.

159139426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79569715.

The product of its digits is 58320, while the sum is 40.

The square root of 159139426 is about 12615.0476019712. The cubic root of 159139426 is about 541.9084575542.

The spelling of 159139426 in words is "one hundred fifty-nine million, one hundred thirty-nine thousand, four hundred twenty-six".