253531520142 has 32 divisors (see below), whose sum is σ = 535677532800. Its totient is φ = 79773540768.

The previous prime is 253531520129. The next prime is 253531520147. The reversal of 253531520142 is 241025135352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253531520147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3982792 + ... + 4045947.

It is an arithmetic number, because the mean of its divisors is an integer number (16739922900).

Almost surely, 2^253531520142 is an apocalyptic number.

253531520142 is an abundant number, since it is smaller than the sum of its proper divisors (282146012658).

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

253531520142 is a wasteful number, since it uses less digits than its factorization.

253531520142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029040.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 253531520142 its reverse (241025135352), we get a palindrome (494556655494).

The spelling of 253531520142 in words is "two hundred fifty-three billion, five hundred thirty-one million, five hundred twenty thousand, one hundred forty-two".