42054405 has 16 divisors (see below), whose sum is σ = 67389504. Its totient is φ = 22394880.

The previous prime is 42054361. The next prime is 42054407. The reversal of 42054405 is 50445024.

It is not a de Polignac number, because 42054405 - 2¹⁰ = 42053381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42054407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10437 + ... + 13893.

It is an arithmetic number, because the mean of its divisors is an integer number (4211844).

Almost surely, 2^42054405 is an apocalyptic number.

It is an amenable number.

42054405 is a deficient number, since it is larger than the sum of its proper divisors (25335099).

42054405 is a wasteful number, since it uses less digits than its factorization.

42054405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42054405 is about 6484.9367768699. The cubic root of 42054405 is about 347.7526895934.

Adding to 42054405 its reverse (50445024), we get a palindrome (92499429).

The spelling of 42054405 in words is "forty-two million, fifty-four thousand, four hundred five".