139471743 has 4 divisors (see below), whose sum is σ = 185962328. Its totient is φ = 92981160.

The previous prime is 139471733. The next prime is 139471753. The reversal of 139471743 is 347174931.

139471743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (139471733) and next prime (139471753).

It is not a de Polignac number, because 139471743 - 2⁴ = 139471727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139471733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23245288 + ... + 23245293.

It is an arithmetic number, because the mean of its divisors is an integer number (46490582).

Almost surely, 2^139471743 is an apocalyptic number.

139471743 is a deficient number, since it is larger than the sum of its proper divisors (46490585).

139471743 is an equidigital number, since it uses as much as digits as its factorization.

139471743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46490584.

The product of its digits is 63504, while the sum is 39.

The square root of 139471743 is about 11809.8155362393. The cubic root of 139471743 is about 518.5954986155.

It can be divided in two parts, 1394 and 71743, that added together give a palindrome (73137).

The spelling of 139471743 in words is "one hundred thirty-nine million, four hundred seventy-one thousand, seven hundred forty-three".