421046786749 has 2 divisors, whose sum is σ = 421046786750. Its totient is φ = 421046786748.

The previous prime is 421046786747. The next prime is 421046786753. The reversal of 421046786749 is 947687640124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335133314649 + 85913472100 = 578907^2 + 293110^2 .

It is a cyclic number.

It is not a de Polignac number, because 421046786749 - 2¹ = 421046786747 is a prime.

Together with 421046786747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 421046786693 and 421046786702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421046786747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210523393374 + 210523393375.

It is an arithmetic number, because the mean of its divisors is an integer number (210523393375).

Almost surely, 2^421046786749 is an apocalyptic number.

It is an amenable number.

421046786749 is a deficient number, since it is larger than the sum of its proper divisors (1).

421046786749 is an equidigital number, since it uses as much as digits as its factorization.

421046786749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 421046786749 in words is "four hundred twenty-one billion, forty-six million, seven hundred eighty-six thousand, seven hundred forty-nine".