42020040401 has 16 divisors (see below), whose sum is σ = 42724281600. Its totient is φ = 41321015568.

The previous prime is 42020040397. The next prime is 42020040427. The reversal of 42020040401 is 10404002024.

It is a cyclic number.

It is not a de Polignac number, because 42020040401 - 2² = 42020040397 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 42020040401.

It is not an unprimeable number, because it can be changed into a prime (42020040451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20729150 + ... + 20731176.

It is an arithmetic number, because the mean of its divisors is an integer number (2670267600).

Almost surely, 2^42020040401 is an apocalyptic number.

It is an amenable number.

42020040401 is a deficient number, since it is larger than the sum of its proper divisors (704241199).

42020040401 is a wasteful number, since it uses less digits than its factorization.

42020040401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 42020040401 its reverse (10404002024), we get a palindrome (52424042425).

The spelling of 42020040401 in words is "forty-two billion, twenty million, forty thousand, four hundred one".