42002401 has 4 divisors (see below), whose sum is σ = 48002752. Its totient is φ = 36002052.

The previous prime is 42002383. The next prime is 42002431. The reversal of 42002401 is 10420024.

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 a de Polignac number, because none of the positive numbers 2^k-42002401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42002431) 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, 3000165 + ... + 3000178.

It is an arithmetic number, because the mean of its divisors is an integer number (12000688).

Almost surely, 2^42002401 is an apocalyptic number.

It is an amenable number.

42002401 is a deficient number, since it is larger than the sum of its proper divisors (6000351).

42002401 is an equidigital number, since it uses as much as digits as its factorization.

42002401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000350.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 42002401 is about 6480.9259369322. The cubic root of 42002401 is about 347.6092881243.

Adding to 42002401 its reverse (10420024), we get a palindrome (52422425).

The spelling of 42002401 in words is "forty-two million, two thousand, four hundred one".