71042951 has 4 divisors (see below), whose sum is σ = 81191952. Its totient is φ = 60893952.

The previous prime is 71042893. The next prime is 71042963. The reversal of 71042951 is 15924017.

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

It is not a de Polignac number, because 71042951 - 2⁶ = 71042887 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 (71042551) 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, 5074490 + ... + 5074503.

It is an arithmetic number, because the mean of its divisors is an integer number (20297988).

Almost surely, 2^71042951 is an apocalyptic number.

71042951 is a deficient number, since it is larger than the sum of its proper divisors (10149001).

71042951 is a wasteful number, since it uses less digits than its factorization.

71042951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149000.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 71042951 is about 8428.6980607921. The cubic root of 71042951 is about 414.1652568257.

Adding to 71042951 its reverse (15924017), we get a palindrome (86966968).

The spelling of 71042951 in words is "seventy-one million, forty-two thousand, nine hundred fifty-one".