71901427 has 8 divisors (see below), whose sum is σ = 80799264. Its totient is φ = 63484608.

The previous prime is 71901391. The next prime is 71901439. The reversal of 71901427 is 72410917.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71901427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71901457) 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 7 ways as a sum of consecutive naturals, for example, 119938 + ... + 120535.

It is an arithmetic number, because the mean of its divisors is an integer number (10099908).

Almost surely, 2^71901427 is an apocalyptic number.

71901427 is a deficient number, since it is larger than the sum of its proper divisors (8897837).

71901427 is a wasteful number, since it uses less digits than its factorization.

71901427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240509.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 71901427 is about 8479.4709150984. The cubic root of 71901427 is about 415.8268259573.

The spelling of 71901427 in words is "seventy-one million, nine hundred one thousand, four hundred twenty-seven".