71542079 has 8 divisors (see below), whose sum is σ = 84400128. Its totient is φ = 59343480.

The previous prime is 71542073. The next prime is 71542091. The reversal of 71542079 is 97024517.

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

It is not a de Polignac number, because 71542079 - 2⁴ = 71542063 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 (71542073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164627 + ... + 165060.

It is an arithmetic number, because the mean of its divisors is an integer number (10550016).

Almost surely, 2^71542079 is an apocalyptic number.

71542079 is a deficient number, since it is larger than the sum of its proper divisors (12858049).

71542079 is a wasteful number, since it uses less digits than its factorization.

71542079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329725.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 71542079 is about 8458.2550800978. The cubic root of 71542079 is about 415.1329307549.

The spelling of 71542079 in words is "seventy-one million, five hundred forty-two thousand, seventy-nine".