254402143120540 has 48 divisors (see below), whose sum is σ = 546711869686752. Its totient is φ = 99386493244416.

The previous prime is 254402143120439. The next prime is 254402143120547. The reversal of 254402143120540 is 45021341204452.

It is a self number, because there is not a number n which added to its sum of digits gives 254402143120540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254402143120547) 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, 729649 + ... + 22568488.

It is an arithmetic number, because the mean of its divisors is an integer number (11389830618474).

Almost surely, 2^{254402143120540} is an apocalyptic number.

254402143120540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254402143120540 is an abundant number, since it is smaller than the sum of its proper divisors (292309726566212).

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

254402143120540 is a wasteful number, since it uses less digits than its factorization.

254402143120540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23310886 (or 23310884 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 254402143120540 its reverse (45021341204452), we get a palindrome (299423484324992).

The spelling of 254402143120540 in words is "two hundred fifty-four trillion, four hundred two billion, one hundred forty-three million, one hundred twenty thousand, five hundred forty".