139735426 has 4 divisors (see below), whose sum is σ = 209603142. Its totient is φ = 69867712.

The previous prime is 139735417. The next prime is 139735441. The reversal of 139735426 is 624537931.

It is a happy number.

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., 138415225 + 1320201 = 11765^2 + 1149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34933855 + ... + 34933858.

Almost surely, 2^139735426 is an apocalyptic number.

139735426 is a deficient number, since it is larger than the sum of its proper divisors (69867716).

139735426 is an equidigital number, since it uses as much as digits as its factorization.

139735426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69867715.

The product of its digits is 136080, while the sum is 40.

The square root of 139735426 is about 11820.9739869437. The cubic root of 139735426 is about 518.9221089345.

The spelling of 139735426 in words is "one hundred thirty-nine million, seven hundred thirty-five thousand, four hundred twenty-six".