139241738 has 4 divisors (see below), whose sum is σ = 208862610. Its totient is φ = 69620868.

The previous prime is 139241689. The next prime is 139241741. The reversal of 139241738 is 837142931.

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., 132549169 + 6692569 = 11513^2 + 2587^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34810433 + ... + 34810436.

Almost surely, 2^139241738 is an apocalyptic number.

139241738 is a deficient number, since it is larger than the sum of its proper divisors (69620872).

139241738 is an equidigital number, since it uses as much as digits as its factorization.

139241738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69620871.

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

The square root of 139241738 is about 11800.0736438380. The cubic root of 139241738 is about 518.3102671562.

The spelling of 139241738 in words is "one hundred thirty-nine million, two hundred forty-one thousand, seven hundred thirty-eight".