254520421143 has 16 divisors (see below), whose sum is σ = 359333277696. Its totient is φ = 159694496640.

The previous prime is 254520421139. The next prime is 254520421147. The reversal of 254520421143 is 341124025452.

It is an interprime number because it is at equal distance from previous prime (254520421139) and next prime (254520421147).

It is not a de Polignac number, because 254520421143 - 2² = 254520421139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254520421147) 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, 2980308 + ... + 3064518.

It is an arithmetic number, because the mean of its divisors is an integer number (22458329856).

Almost surely, 2^254520421143 is an apocalyptic number.

254520421143 is a deficient number, since it is larger than the sum of its proper divisors (104812856553).

254520421143 is a wasteful number, since it uses less digits than its factorization.

254520421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143494.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 254520421143 its reverse (341124025452), we get a palindrome (595644446595).

The spelling of 254520421143 in words is "two hundred fifty-four billion, five hundred twenty million, four hundred twenty-one thousand, one hundred forty-three".