71442001 has 4 divisors (see below), whose sum is σ = 72302832. Its totient is φ = 70581172.

The previous prime is 71441999. The next prime is 71442013. The reversal of 71442001 is 10024417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10024417 = 13 ⋅771109.

It is a cyclic number.

It is not a de Polignac number, because 71442001 - 2¹ = 71441999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71442001.

It is not an unprimeable number, because it can be changed into a prime (71442101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430291 + ... + 430456.

It is an arithmetic number, because the mean of its divisors is an integer number (18075708).

Almost surely, 2^71442001 is an apocalyptic number.

It is an amenable number.

71442001 is a deficient number, since it is larger than the sum of its proper divisors (860831).

71442001 is an equidigital number, since it uses as much as digits as its factorization.

71442001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860830.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 71442001 is about 8452.3370141044. The cubic root of 71442001 is about 414.9392682213.

Adding to 71442001 its reverse (10024417), we get a palindrome (81466418).

The spelling of 71442001 in words is "seventy-one million, four hundred forty-two thousand, one".