71374139 has 4 divisors (see below), whose sum is σ = 71399520. Its totient is φ = 71348760.

The previous prime is 71374067. The next prime is 71374151. The reversal of 71374139 is 93147317.

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

It is a cyclic number.

It is not a de Polignac number, because 71374139 - 2¹² = 71370043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71374099 and 71374108.

It is not an unprimeable number, because it can be changed into a prime (71374169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7859 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (17849880).

Almost surely, 2^71374139 is an apocalyptic number.

71374139 is a deficient number, since it is larger than the sum of its proper divisors (25381).

71374139 is a wasteful number, since it uses less digits than its factorization.

71374139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25380.

The product of its digits is 15876, while the sum is 35.

The square root of 71374139 is about 8448.3216676450. The cubic root of 71374139 is about 414.8078444613.

The spelling of 71374139 in words is "seventy-one million, three hundred seventy-four thousand, one hundred thirty-nine".