71450642 has 12 divisors (see below), whose sum is σ = 108973098. Its totient is φ = 35136000.

The previous prime is 71450611. The next prime is 71450683. The reversal of 71450642 is 24605417.

It can be written as a sum of positive squares in 3 ways, for example, as 31013761 + 40436881 = 5569^2 + 6359^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2642 + ... + 12242.

Almost surely, 2^71450642 is an apocalyptic number.

71450642 is a deficient number, since it is larger than the sum of its proper divisors (37522456).

71450642 is an equidigital number, since it uses as much as digits as its factorization.

71450642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725 (or 9664 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 71450642 is about 8452.8481590527. The cubic root of 71450642 is about 414.9559966892.

The spelling of 71450642 in words is "seventy-one million, four hundred fifty thousand, six hundred forty-two".