254042440 has 32 divisors (see below), whose sum is σ = 572832000. Its totient is φ = 101397184.

The previous prime is 254042431. The next prime is 254042443. The reversal of 254042440 is 44240452.

It is a happy number.

It is a super-2 number, since 2×254042440² = 129075122642307200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (254042443) 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 7 ways as a sum of consecutive naturals, for example, 12531 + ... + 25789.

It is an arithmetic number, because the mean of its divisors is an integer number (17901000).

Almost surely, 2^254042440 is an apocalyptic number.

254042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254042440 is an abundant number, since it is smaller than the sum of its proper divisors (318789560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

254042440 is a wasteful number, since it uses less digits than its factorization.

254042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13749 (or 13745 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 254042440 is about 15938.7088561150. The cubic root of 254042440 is about 633.3378232984.

Adding to 254042440 its reverse (44240452), we get a palindrome (298282892).

The spelling of 254042440 in words is "two hundred fifty-four million, forty-two thousand, four hundred forty".