42004002405 has 8 divisors (see below), whose sum is σ = 67206403872. Its totient is φ = 22402134608.

The previous prime is 42004002377. The next prime is 42004002409. The reversal of 42004002405 is 50420040024.

42004002405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42004002405 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004002409) 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, 1400133399 + ... + 1400133428.

It is an arithmetic number, because the mean of its divisors is an integer number (8400800484).

Almost surely, 2^42004002405 is an apocalyptic number.

It is an amenable number.

42004002405 is a deficient number, since it is larger than the sum of its proper divisors (25202401467).

42004002405 is a wasteful number, since it uses less digits than its factorization.

42004002405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800266835.

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 42004002405 its reverse (50420040024), we get a palindrome (92424042429).

The spelling of 42004002405 in words is "forty-two billion, four million, two thousand, four hundred five".