40423055 has 16 divisors (see below), whose sum is σ = 50889600. Its totient is φ = 30788352.

The previous prime is 40423001. The next prime is 40423057. The reversal of 40423055 is 55032404.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40423055 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40423055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423057) 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, 6371 + ... + 11019.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^40423055 is an apocalyptic number.

40423055 is a deficient number, since it is larger than the sum of its proper divisors (10466545).

40423055 is a wasteful number, since it uses less digits than its factorization.

40423055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40423055 is about 6357.9127864418. The cubic root of 40423055 is about 343.1966533173.

Adding to 40423055 its reverse (55032404), we get a palindrome (95455459).

The spelling of 40423055 in words is "forty million, four hundred twenty-three thousand, fifty-five".