420631138282 has 4 divisors (see below), whose sum is σ = 630946707426. Its totient is φ = 210315569140.

The previous prime is 420631138247. The next prime is 420631138313. The reversal of 420631138282 is 282831136024.

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., 389711784361 + 30919353921 = 624269^2 + 175839^2 .

It is a super-2 number, since 2×420631138282² (a number of 24 digits) contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105157784569 + ... + 105157784572.

Almost surely, 2^420631138282 is an apocalyptic number.

420631138282 is a deficient number, since it is larger than the sum of its proper divisors (210315569144).

420631138282 is a wasteful number, since it uses less digits than its factorization.

420631138282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210315569143.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 420631138282 in words is "four hundred twenty billion, six hundred thirty-one million, one hundred thirty-eight thousand, two hundred eighty-two".