421034705827 has 2 divisors, whose sum is σ = 421034705828. Its totient is φ = 421034705826.

The previous prime is 421034705803. The next prime is 421034705837. The reversal of 421034705827 is 728507430124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421034705827 - 2¹¹ = 421034703779 is a prime.

It is a super-3 number, since 3×421034705827³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (421034705837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210517352913 + 210517352914.

It is an arithmetic number, because the mean of its divisors is an integer number (210517352914).

Almost surely, 2^421034705827 is an apocalyptic number.

421034705827 is a deficient number, since it is larger than the sum of its proper divisors (1).

421034705827 is an equidigital number, since it uses as much as digits as its factorization.

421034705827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 421034705827 in words is "four hundred twenty-one billion, thirty-four million, seven hundred five thousand, eight hundred twenty-seven".