42402205 has 16 divisors (see below), whose sum is σ = 55411200. Its totient is φ = 31026240.

The previous prime is 42402193. The next prime is 42402209. The reversal of 42402205 is 50220424.

It is a de Polignac number, because none of the positive numbers 2^k-42402205 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402209) 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 15 ways as a sum of consecutive naturals, for example, 4941 + ... + 10450.

It is an arithmetic number, because the mean of its divisors is an integer number (3463200).

Almost surely, 2^42402205 is an apocalyptic number.

It is an amenable number.

42402205 is a deficient number, since it is larger than the sum of its proper divisors (13008995).

42402205 is a wasteful number, since it uses less digits than its factorization.

42402205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15444.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42402205 is about 6511.6975513302. The cubic root of 42402205 is about 348.7087248763.

Adding to 42402205 its reverse (50220424), we get a palindrome (92622629).

The spelling of 42402205 in words is "forty-two million, four hundred two thousand, two hundred five".