420343402524401 has 4 divisors (see below), whose sum is σ = 421292258963952. Its totient is φ = 419394546084852.

The previous prime is 420343402524371. The next prime is 420343402524403. The reversal of 420343402524401 is 104425204343024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420343402524401 - 2⁶ = 420343402524337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420343402524403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474428219111 + ... + 474428219996.

It is an arithmetic number, because the mean of its divisors is an integer number (105323064740988).

Almost surely, 2^{420343402524401} is an apocalyptic number.

It is an amenable number.

420343402524401 is a deficient number, since it is larger than the sum of its proper divisors (948856439551).

420343402524401 is an equidigital number, since it uses as much as digits as its factorization.

420343402524401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948856439550.

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 420343402524401 its reverse (104425204343024), we get a palindrome (524768606867425).

The spelling of 420343402524401 in words is "four hundred twenty trillion, three hundred forty-three billion, four hundred two million, five hundred twenty-four thousand, four hundred one".