71070142 has 32 divisors (see below), whose sum is σ = 128177280. Its totient is φ = 29121120.

The previous prime is 71070137. The next prime is 71070151. The reversal of 71070142 is 24107017.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9409 + ... + 15187.

It is an arithmetic number, because the mean of its divisors is an integer number (4005540).

Almost surely, 2^71070142 is an apocalyptic number.

71070142 is a deficient number, since it is larger than the sum of its proper divisors (57107138).

71070142 is a wasteful number, since it uses less digits than its factorization.

71070142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 71070142 is about 8430.3109076712. The cubic root of 71070142 is about 414.2180893300.

Adding to 71070142 its reverse (24107017), we get a palindrome (95177159).

The spelling of 71070142 in words is "seventy-one million, seventy thousand, one hundred forty-two".