40454 has 8 divisors (see below), whose sum is σ = 61560.
Its totient is φ = 19936.
The previous prime is 40433. The next prime is 40459. The reversal of 40454 is 45404.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a super-2 number, since 2×404542 = 3273052232, which contains 22 as substring.
40454 is an undulating number in base 15.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40459) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 315.
It is an arithmetic number, because the mean of its divisors is an integer number (7695).
240454 is an apocalyptic number.
40454 is a deficient number, since it is larger than the sum of its proper divisors (21106).
40454 is a wasteful number, since it uses less digits than its factorization.
40454 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 294.
The product of its (nonzero) digits is 320, while the sum is 17.
The square root of 40454 is about 201.1317975856.
The cubic root of 40454 is about 34.3284206584.
Adding to 40454 its reverse (45404), we get a palindrome (85858).
Subtracting 40454 from its reverse (45404), we obtain a triangular number (4950 = T99).
It can be divided in two parts, 40 and 454, that added together give a palindrome (494).
The spelling of 40454 in words is "forty thousand, four hundred fifty-four".