253421477142 has 16 divisors (see below), whose sum is σ = 508713226752. Its totient is φ = 84162113640.

The previous prime is 253421477039. The next prime is 253421477201. The reversal of 253421477142 is 241774124352.

It is a junction number, because it is equal to n+sod(n) for n = 253421477094 and 253421477103.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 77926258 + ... + 77929509.

It is an arithmetic number, because the mean of its divisors is an integer number (31794576672).

Almost surely, 2^253421477142 is an apocalyptic number.

253421477142 is an abundant number, since it is smaller than the sum of its proper divisors (255291749610).

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

253421477142 is a wasteful number, since it uses less digits than its factorization.

253421477142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155856043.

The product of its digits is 376320, while the sum is 42.

The spelling of 253421477142 in words is "two hundred fifty-three billion, four hundred twenty-one million, four hundred seventy-seven thousand, one hundred forty-two".