254402120523 has 16 divisors (see below), whose sum is σ = 359167615776. Its totient is φ = 159619668480.

The previous prime is 254402120461. The next prime is 254402120569. The reversal of 254402120523 is 325021204452.

It is not a de Polignac number, because 254402120523 - 2⁶ = 254402120459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254402120573) 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, 2041765 + ... + 2162777.

It is an arithmetic number, because the mean of its divisors is an integer number (22447975986).

Almost surely, 2^254402120523 is an apocalyptic number.

254402120523 is a deficient number, since it is larger than the sum of its proper divisors (104765495253).

254402120523 is a wasteful number, since it uses less digits than its factorization.

254402120523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162254.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 254402120523 its reverse (325021204452), we get a palindrome (579423324975).

The spelling of 254402120523 in words is "two hundred fifty-four billion, four hundred two million, one hundred twenty thousand, five hundred twenty-three".