420522044124251 has 8 divisors (see below), whose sum is σ = 438854788389120. Its totient is φ = 402193397953512.

The previous prime is 420522044124209. The next prime is 420522044124277. The reversal of 420522044124251 is 152421440225024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420522044124251 is a prime.

It is a super-2 number, since 2×420522044124251² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420522044124551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024313831 + ... + 1024724288.

It is an arithmetic number, because the mean of its divisors is an integer number (54856848548640).

Almost surely, 2^{420522044124251} is an apocalyptic number.

420522044124251 is a deficient number, since it is larger than the sum of its proper divisors (18332744264869).

420522044124251 is a wasteful number, since it uses less digits than its factorization.

420522044124251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049047065.

The product of its (nonzero) digits is 204800, while the sum is 38.

Adding to 420522044124251 its reverse (152421440225024), we get a palindrome (572943484349275).

The spelling of 420522044124251 in words is "four hundred twenty trillion, five hundred twenty-two billion, forty-four million, one hundred twenty-four thousand, two hundred fifty-one".