253143515142 has 80 divisors (see below), whose sum is σ = 648404132640. Its totient is φ = 72310828032.

The previous prime is 253143515129. The next prime is 253143515143. The reversal of 253143515142 is 241515341352.

253143515142 is a `hidden beast` number, since 2 + 5 + 31 + 435 + 151 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 253143515097 and 253143515106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253143515143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5735334 + ... + 5779302.

It is an arithmetic number, because the mean of its divisors is an integer number (8105051658).

Almost surely, 2^253143515142 is an apocalyptic number.

253143515142 is an abundant number, since it is smaller than the sum of its proper divisors (395260617498).

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

253143515142 is a wasteful number, since it uses less digits than its factorization.

253143515142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49067 (or 49058 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 253143515142 its reverse (241515341352), we get a palindrome (494658856494).

The spelling of 253143515142 in words is "two hundred fifty-three billion, one hundred forty-three million, five hundred fifteen thousand, one hundred forty-two".