71270142 has 16 divisors (see below), whose sum is σ = 145573632. Its totient is φ = 23251160.

The previous prime is 71270141. The next prime is 71270149. The reversal of 71270142 is 24107217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71270141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126084 + ... + 126647.

It is an arithmetic number, because the mean of its divisors is an integer number (9098352).

Almost surely, 2^71270142 is an apocalyptic number.

71270142 is an abundant number, since it is smaller than the sum of its proper divisors (74303490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71270142 is a wasteful number, since it uses less digits than its factorization.

71270142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252783.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 71270142 is about 8442.1645328671. The cubic root of 71270142 is about 414.6062787353.

Adding to 71270142 its reverse (24107217), we get a palindrome (95377359).

The spelling of 71270142 in words is "seventy-one million, two hundred seventy thousand, one hundred forty-two".