254540421 has 16 divisors (see below), whose sum is σ = 377636800. Its totient is φ = 169450704.

The previous prime is 254540387. The next prime is 254540431. The reversal of 254540421 is 124045452.

254540421 is a `hidden beast` number, since 254 + 5 + 404 + 2 + 1 = 666.

It is not a de Polignac number, because 254540421 - 2⁶ = 254540357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254540431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13575 + ... + 26331.

It is an arithmetic number, because the mean of its divisors is an integer number (23602300).

Almost surely, 2^254540421 is an apocalyptic number.

It is an amenable number.

254540421 is a deficient number, since it is larger than the sum of its proper divisors (123096379).

254540421 is a wasteful number, since it uses less digits than its factorization.

254540421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13505 (or 13499 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 254540421 is about 15954.3229564905. The cubic root of 254540421 is about 633.7513819514.

Adding to 254540421 its reverse (124045452), we get a palindrome (378585873).

The spelling of 254540421 in words is "two hundred fifty-four million, five hundred forty thousand, four hundred twenty-one".