71042870 has 32 divisors (see below), whose sum is σ = 130461408. Its totient is φ = 27848448.

The previous prime is 71042827. The next prime is 71042879. The reversal of 71042870 is 7824017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71042879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223952 + ... + 224268.

It is an arithmetic number, because the mean of its divisors is an integer number (4076919).

Almost surely, 2^71042870 is an apocalyptic number.

71042870 is a deficient number, since it is larger than the sum of its proper divisors (59418538).

71042870 is a wasteful number, since it uses less digits than its factorization.

71042870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 71042870 is about 8428.6932557781. The cubic root of 71042870 is about 414.1650994214.

Adding to 71042870 its reverse (7824017), we get a palindrome (78866887).

The spelling of 71042870 in words is "seventy-one million, forty-two thousand, eight hundred seventy".