139467742 has 8 divisors (see below), whose sum is σ = 210100176. Its totient is φ = 69434352.

The previous prime is 139467739. The next prime is 139467743. The reversal of 139467742 is 247764931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139467743) 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 in 3 ways as a sum of consecutive naturals, for example, 149178 + ... + 150109.

It is an arithmetic number, because the mean of its divisors is an integer number (26262522).

Almost surely, 2^139467742 is an apocalyptic number.

139467742 is a deficient number, since it is larger than the sum of its proper divisors (70632434).

139467742 is a wasteful number, since it uses less digits than its factorization.

139467742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299522.

The product of its digits is 254016, while the sum is 43.

The square root of 139467742 is about 11809.6461420315. The cubic root of 139467742 is about 518.5905396172.

The spelling of 139467742 in words is "one hundred thirty-nine million, four hundred sixty-seven thousand, seven hundred forty-two".