42000001 has 8 divisors (see below), whose sum is σ = 44254080. Its totient is φ = 39781632.

The previous prime is 41999987. The next prime is 42000011. The reversal of 42000001 is 10000024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42000001 - 2¹¹ = 41997953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42000011) 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, 6496 + ... + 11233.

It is an arithmetic number, because the mean of its divisors is an integer number (5531760).

Almost surely, 2^42000001 is an apocalyptic number.

It is an amenable number.

42000001 is a deficient number, since it is larger than the sum of its proper divisors (2254079).

42000001 is a wasteful number, since it uses less digits than its factorization.

42000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17855.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 42000001 is about 6480.7407755595. The cubic root of 42000001 is about 347.6026672474.

Adding to 42000001 its reverse (10000024), we get a palindrome (52000025).

The spelling of 42000001 in words is "forty-two million, one", and thus it is an aban number and an uban number.