71143042 has 8 divisors (see below), whose sum is σ = 107052156. Its totient is φ = 35458992.

The previous prime is 71143031. The next prime is 71143057. The reversal of 71143042 is 24034117.

It can be written as a sum of positive squares in 2 ways, for example, as 62552281 + 8590761 = 7909^2 + 2931^2 .

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

It is a super-2 number, since 2×71143042² = 10122664850027528, which contains 22 as substring.

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, 55473 + ... + 56740.

Almost surely, 2^71143042 is an apocalyptic number.

71143042 is a deficient number, since it is larger than the sum of its proper divisors (35909114).

71143042 is a wasteful number, since it uses less digits than its factorization.

71143042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112532.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71143042 is about 8434.6334834419. The cubic root of 71143042 is about 414.3596686163.

Adding to 71143042 its reverse (24034117), we get a palindrome (95177159).

The spelling of 71143042 in words is "seventy-one million, one hundred forty-three thousand, forty-two".