420724552543 has 2 divisors, whose sum is σ = 420724552544. Its totient is φ = 420724552542.

The previous prime is 420724552531. The next prime is 420724552609. The reversal of 420724552543 is 345255427024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420724552543 - 2¹³ = 420724544351 is a prime.

It is a super-2 number, since 2×420724552543² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420724552543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420724552643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210362276271 + 210362276272.

It is an arithmetic number, because the mean of its divisors is an integer number (210362276272).

Almost surely, 2^420724552543 is an apocalyptic number.

420724552543 is a deficient number, since it is larger than the sum of its proper divisors (1).

420724552543 is an equidigital number, since it uses as much as digits as its factorization.

420724552543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344000, while the sum is 43.

Adding to 420724552543 its reverse (345255427024), we get a palindrome (765979979567).

The spelling of 420724552543 in words is "four hundred twenty billion, seven hundred twenty-four million, five hundred fifty-two thousand, five hundred forty-three".