421558038386 has 4 divisors (see below), whose sum is σ = 632337057582. Its totient is φ = 210779019192.

The previous prime is 421558038371. The next prime is 421558038427. The reversal of 421558038386 is 683830855124.

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., 311901027361 + 109657011025 = 558481^2 + 331145^2 .

It is a super-2 number, since 2×421558038386² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105389509595 + ... + 105389509598.

Almost surely, 2^421558038386 is an apocalyptic number.

421558038386 is a deficient number, since it is larger than the sum of its proper divisors (210779019196).

421558038386 is a wasteful number, since it uses less digits than its factorization.

421558038386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210779019195.

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 421558038386 in words is "four hundred twenty-one billion, five hundred fifty-eight million, thirty-eight thousand, three hundred eighty-six".