420134322121 has 4 divisors (see below), whose sum is σ = 420412374144. Its totient is φ = 419856270100.

The previous prime is 420134322119. The next prime is 420134322131. The reversal of 420134322121 is 121223431024.

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 420134322121 - 2¹ = 420134322119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420134322131) 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, 139023745 + ... + 139026766.

It is an arithmetic number, because the mean of its divisors is an integer number (105103093536).

Almost surely, 2^420134322121 is an apocalyptic number.

It is an amenable number.

420134322121 is a deficient number, since it is larger than the sum of its proper divisors (278052023).

420134322121 is a wasteful number, since it uses less digits than its factorization.

420134322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278052022.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 420134322121 its reverse (121223431024), we get a palindrome (541357753145).

The spelling of 420134322121 in words is "four hundred twenty billion, one hundred thirty-four million, three hundred twenty-two thousand, one hundred twenty-one".