421420014131 has 4 divisors (see below), whose sum is σ = 421435234200. Its totient is φ = 421404794064.

The previous prime is 421420014101. The next prime is 421420014139. The reversal of 421420014131 is 131410024124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421420014131 is a prime.

It is a super-2 number, since 2×421420014131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421420014097 and 421420014106.

It is not an unprimeable number, because it can be changed into a prime (421420014139) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7568426 + ... + 7623903.

It is an arithmetic number, because the mean of its divisors is an integer number (105358808550).

Almost surely, 2^421420014131 is an apocalyptic number.

421420014131 is a deficient number, since it is larger than the sum of its proper divisors (15220069).

421420014131 is a wasteful number, since it uses less digits than its factorization.

421420014131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15220068.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 421420014131 its reverse (131410024124), we get a palindrome (552830038255).

The spelling of 421420014131 in words is "four hundred twenty-one billion, four hundred twenty million, fourteen thousand, one hundred thirty-one".