71250042 has 16 divisors (see below), whose sum is σ = 147414240. Its totient is φ = 22930992.

The previous prime is 71250041. The next prime is 71250083. The reversal of 71250042 is 24005217.

It is not an unprimeable number, because it can be changed into a prime (71250041) 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, 204568 + ... + 204915.

It is an arithmetic number, because the mean of its divisors is an integer number (9213390).

Almost surely, 2^71250042 is an apocalyptic number.

71250042 is an abundant number, since it is smaller than the sum of its proper divisors (76164198).

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

71250042 is a wasteful number, since it uses less digits than its factorization.

71250042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409517.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 71250042 is about 8440.9739959320. The cubic root of 71250042 is about 414.5672985513.

Adding to 71250042 its reverse (24005217), we get a palindrome (95255259).

The spelling of 71250042 in words is "seventy-one million, two hundred fifty thousand, forty-two".