71722142 has 8 divisors (see below), whose sum is σ = 112260816. Its totient is φ = 34301872.

The previous prime is 71722087. The next prime is 71722171. The reversal of 71722142 is 24122717.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779543 + ... + 779634.

It is an arithmetic number, because the mean of its divisors is an integer number (14032602).

Almost surely, 2^71722142 is an apocalyptic number.

71722142 is a deficient number, since it is larger than the sum of its proper divisors (40538674).

71722142 is a wasteful number, since it uses less digits than its factorization.

71722142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559202.

The product of its digits is 1568, while the sum is 26.

The square root of 71722142 is about 8468.8926076554. The cubic root of 71722142 is about 415.4809192259.

Adding to 71722142 its reverse (24122717), we get a palindrome (95844859).

The spelling of 71722142 in words is "seventy-one million, seven hundred twenty-two thousand, one hundred forty-two".