71289542 has 4 divisors (see below), whose sum is σ = 106934316. Its totient is φ = 35644770.

The previous prime is 71289527. The next prime is 71289563. The reversal of 71289542 is 24598217.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 71289496 and 71289505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17822384 + ... + 17822387.

It is an arithmetic number, because the mean of its divisors is an integer number (26733579).

Almost surely, 2^71289542 is an apocalyptic number.

71289542 is a deficient number, since it is larger than the sum of its proper divisors (35644774).

71289542 is a wasteful number, since it uses less digits than its factorization.

71289542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35644773.

The product of its digits is 40320, while the sum is 38.

The square root of 71289542 is about 8443.3134491146. The cubic root of 71289542 is about 414.6438944506.

The spelling of 71289542 in words is "seventy-one million, two hundred eighty-nine thousand, five hundred forty-two".