421085733749 has 2 divisors, whose sum is σ = 421085733750. Its totient is φ = 421085733748.

The previous prime is 421085733737. The next prime is 421085733767. The reversal of 421085733749 is 947337580124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315602386225 + 105483347524 = 561785^2 + 324782^2 .

It is a cyclic number.

It is not a de Polignac number, because 421085733749 - 2³⁶ = 352366257013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421085733749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421085733949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210542866874 + 210542866875.

It is an arithmetic number, because the mean of its divisors is an integer number (210542866875).

Almost surely, 2^421085733749 is an apocalyptic number.

It is an amenable number.

421085733749 is a deficient number, since it is larger than the sum of its proper divisors (1).

421085733749 is an equidigital number, since it uses as much as digits as its factorization.

421085733749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 421085733749 in words is "four hundred twenty-one billion, eighty-five million, seven hundred thirty-three thousand, seven hundred forty-nine".