71442410 has 32 divisors (see below), whose sum is σ = 141114960. Its totient is φ = 25878528.

The previous prime is 71442403. The next prime is 71442419. The reversal of 71442410 is 1424417.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8826841 + 62615569 = 2971^2 + 7913^2 .

It is not an unprimeable number, because it can be changed into a prime (71442419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706 + ... + 12074.

Almost surely, 2^71442410 is an apocalyptic number.

71442410 is a deficient number, since it is larger than the sum of its proper divisors (69672550).

71442410 is a wasteful number, since it uses less digits than its factorization.

71442410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10442.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 71442410 is about 8452.3612085618. The cubic root of 71442410 is about 414.9400600516.

Adding to 71442410 its reverse (1424417), we get a palindrome (72866827).

The spelling of 71442410 in words is "seventy-one million, four hundred forty-two thousand, four hundred ten".