420430141321551 has 20 divisors (see below), whose sum is σ = 632995239520512. Its totient is φ = 278079778505088.

The previous prime is 420430141321507. The next prime is 420430141321643. The reversal of 420430141321551 is 155123141034024.

420430141321551 is a `hidden beast` number, since 4 + 2 + 0 + 4 + 30 + 1 + 41 + 32 + 1 + 551 = 666.

It is not a de Polignac number, because 420430141321551 - 2²⁷ = 420430007103823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420430141326551) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20435011650 + ... + 20435032223.

Almost surely, 2^{420430141321551} is an apocalyptic number.

420430141321551 is a deficient number, since it is larger than the sum of its proper divisors (212565098198961).

420430141321551 is a wasteful number, since it uses less digits than its factorization.

420430141321551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40870044012 (or 40870044003 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 420430141321551 its reverse (155123141034024), we get a palindrome (575553282355575).

The spelling of 420430141321551 in words is "four hundred twenty trillion, four hundred thirty billion, one hundred forty-one million, three hundred twenty-one thousand, five hundred fifty-one".