71442215 has 24 divisors (see below), whose sum is σ = 94471920. Its totient is φ = 51826944.

The previous prime is 71442193. The next prime is 71442229. The reversal of 71442215 is 51224417.

It is a de Polignac number, because none of the positive numbers 2^k-71442215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49139 + ... + 50571.

It is an arithmetic number, because the mean of its divisors is an integer number (3936330).

Almost surely, 2^71442215 is an apocalyptic number.

71442215 is a deficient number, since it is larger than the sum of its proper divisors (23029705).

71442215 is a wasteful number, since it uses less digits than its factorization.

71442215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1510 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 71442215 is about 8452.3496733157. The cubic root of 71442215 is about 414.9396825290.

The spelling of 71442215 in words is "seventy-one million, four hundred forty-two thousand, two hundred fifteen".