420234553240258 has 4 divisors (see below), whose sum is σ = 630351829860390. Its totient is φ = 210117276620128.

The previous prime is 420234553240231. The next prime is 420234553240259. The reversal of 420234553240258 is 852042355432024.

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., 360306719172009 + 59927834068249 = 18981747^2 + 7741307^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (420234553240259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105058638310063 + ... + 105058638310066.

Almost surely, 2^{420234553240258} is an apocalyptic number.

420234553240258 is a deficient number, since it is larger than the sum of its proper divisors (210117276620132).

420234553240258 is a wasteful number, since it uses less digits than its factorization.

420234553240258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210117276620131.

The product of its (nonzero) digits is 9216000, while the sum is 49.

The spelling of 420234553240258 in words is "four hundred twenty trillion, two hundred thirty-four billion, five hundred fifty-three million, two hundred forty thousand, two hundred fifty-eight".