42471001 has 4 divisors (see below), whose sum is σ = 42691252. Its totient is φ = 42250752.

The previous prime is 42470983. The next prime is 42471029. The reversal of 42471001 is 10017424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25857225 + 16613776 = 5085^2 + 4076^2 .

It is a cyclic number.

It is not a de Polignac number, because 42471001 - 2⁷ = 42470873 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 42471001.

It is not an unprimeable number, because it can be changed into a prime (42471071) 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, 109836 + ... + 110221.

It is an arithmetic number, because the mean of its divisors is an integer number (10672813).

Almost surely, 2^42471001 is an apocalyptic number.

It is an amenable number.

42471001 is a deficient number, since it is larger than the sum of its proper divisors (220251).

42471001 is a wasteful number, since it uses less digits than its factorization.

42471001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220250.

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

The square root of 42471001 is about 6516.9779039061. The cubic root of 42471001 is about 348.8972119526.

Adding to 42471001 its reverse (10017424), we get a palindrome (52488425).

The spelling of 42471001 in words is "forty-two million, four hundred seventy-one thousand, one".