42001361 has 4 divisors (see below), whose sum is σ = 42024000. Its totient is φ = 41978724.

The previous prime is 42001357. The next prime is 42001369. The reversal of 42001361 is 16310024.

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.

It is a cyclic number.

It is not a de Polignac number, because 42001361 - 2² = 42001357 is a prime.

It is a super-2 number, since 2×42001361² = 3528228651704642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42001369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8261 + ... + 12338.

It is an arithmetic number, because the mean of its divisors is an integer number (10506000).

Almost surely, 2^42001361 is an apocalyptic number.

It is an amenable number.

42001361 is a deficient number, since it is larger than the sum of its proper divisors (22639).

42001361 is a wasteful number, since it uses less digits than its factorization.

42001361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22638.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 42001361 is about 6480.8457009869. The cubic root of 42001361 is about 347.6064191086.

Adding to 42001361 its reverse (16310024), we get a palindrome (58311385).

The spelling of 42001361 in words is "forty-two million, one thousand, three hundred sixty-one".