42001455 has 16 divisors (see below), whose sum is σ = 67582080. Its totient is φ = 22274208.

The previous prime is 42001447. The next prime is 42001469. The reversal of 42001455 is 55410024.

It is not a de Polignac number, because 42001455 - 2³ = 42001447 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5137 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (4223880).

Almost surely, 2^42001455 is an apocalyptic number.

42001455 is a deficient number, since it is larger than the sum of its proper divisors (25580625).

42001455 is a wasteful number, since it uses less digits than its factorization.

42001455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42001455 is about 6480.8529531228. The cubic root of 42001455 is about 347.6066784254.

Adding to 42001455 its reverse (55410024), we get a palindrome (97411479).

The spelling of 42001455 in words is "forty-two million, one thousand, four hundred fifty-five".