139139062 has 4 divisors (see below), whose sum is σ = 208708596. Its totient is φ = 69569530.

The previous prime is 139139059. The next prime is 139139081. The reversal of 139139062 is 260931931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 260931931 = 13 ⋅20071687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34784764 + ... + 34784767.

It is an arithmetic number, because the mean of its divisors is an integer number (52177149).

Almost surely, 2^139139062 is an apocalyptic number.

139139062 is a deficient number, since it is larger than the sum of its proper divisors (69569534).

139139062 is an equidigital number, since it uses as much as digits as its factorization.

139139062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69569533.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 139139062 is about 11795.7221906927. The cubic root of 139139062 is about 518.1828362292.

The spelling of 139139062 in words is "one hundred thirty-nine million, one hundred thirty-nine thousand, sixty-two".