420838268871 has 8 divisors (see below), whose sum is σ = 561292562160. Its totient is φ = 280471410752.

The previous prime is 420838268869. The next prime is 420838268881. The reversal of 420838268871 is 178862838024.

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

It is a cyclic number.

It is not a de Polignac number, because 420838268871 - 2¹ = 420838268869 is a prime.

It is a super-2 number, since 2×420838268871² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420838268801) 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, 21847560 + ... + 21866813.

It is an arithmetic number, because the mean of its divisors is an integer number (70161570270).

Almost surely, 2^420838268871 is an apocalyptic number.

420838268871 is a deficient number, since it is larger than the sum of its proper divisors (140454293289).

420838268871 is a wasteful number, since it uses less digits than its factorization.

420838268871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43717585.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 420838268871 in words is "four hundred twenty billion, eight hundred thirty-eight million, two hundred sixty-eight thousand, eight hundred seventy-one".