254405142154243 has 32 divisors (see below), whose sum is σ = 278182178150400. Its totient is φ = 231907275600000.

The previous prime is 254405142154199. The next prime is 254405142154291. The reversal of 254405142154243 is 342451241504452.

It is a cyclic number.

It is not a de Polignac number, because 254405142154243 - 2²⁹ = 254404605283331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254405142154193 and 254405142154202.

It is not an unprimeable number, because it can be changed into a prime (254405142154343) 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 31 ways as a sum of consecutive naturals, for example, 170562393 + ... + 172047493.

It is an arithmetic number, because the mean of its divisors is an integer number (8693193067200).

Almost surely, 2^{254405142154243} is an apocalyptic number.

254405142154243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

254405142154243 is a deficient number, since it is larger than the sum of its proper divisors (23777035996157).

254405142154243 is a wasteful number, since it uses less digits than its factorization.

254405142154243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488483.

The product of its (nonzero) digits is 3072000, while the sum is 46.

Adding to 254405142154243 its reverse (342451241504452), we get a palindrome (596856383658695).

The spelling of 254405142154243 in words is "two hundred fifty-four trillion, four hundred five billion, one hundred forty-two million, one hundred fifty-four thousand, two hundred forty-three".