253270072642 has 4 divisors (see below), whose sum is σ = 379905108966. Its totient is φ = 126635036320.

The previous prime is 253270072631. The next prime is 253270072651. The reversal of 253270072642 is 246270072352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136974750201 + 116295322441 = 370101^2 + 341021^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 253270072595 and 253270072604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63317518159 + ... + 63317518162.

Almost surely, 2^253270072642 is an apocalyptic number.

253270072642 is a deficient number, since it is larger than the sum of its proper divisors (126635036324).

253270072642 is a wasteful number, since it uses less digits than its factorization.

253270072642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126635036323.

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 253270072642 in words is "two hundred fifty-three billion, two hundred seventy million, seventy-two thousand, six hundred forty-two".