42539475001 has 3 divisors (see below), whose sum is σ = 42539681253. Its totient is φ = 42539268750.

The previous prime is 42539474983. The next prime is 42539475007. The reversal of 42539475001 is 10057493524.

It is a happy number.

The square root of 42539475001 is 206251.

It is a perfect power (a square), and thus also a powerful number.

42539475001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-42539475001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42539475007) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103126 + ... + 309376.

It is an arithmetic number, because the mean of its divisors is an integer number (14179893751).

Almost surely, 2^42539475001 is an apocalyptic number.

42539475001 is the 206251-st square number.

42539475001 is the 103126-th centered octagonal number.

It is an amenable number.

42539475001 is a deficient number, since it is larger than the sum of its proper divisors (206252).

42539475001 is an frugal number, since it uses more digits than its factorization.

42539475001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412502 (or 206251 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 42539475001 in words is "forty-two billion, five hundred thirty-nine million, four hundred seventy-five thousand, one".