650421043 has 2 divisors, whose sum is σ = 650421044. Its totient is φ = 650421042.

The previous prime is 650421041. The next prime is 650421047. The reversal of 650421043 is 340124056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650421043 - 2¹ = 650421041 is a prime.

Together with 650421041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 650420999 and 650421017.

It is not a weakly prime, because it can be changed into another prime (650421041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325210521 + 325210522.

It is an arithmetic number, because the mean of its divisors is an integer number (325210522).

Almost surely, 2^650421043 is an apocalyptic number.

650421043 is a deficient number, since it is larger than the sum of its proper divisors (1).

650421043 is an equidigital number, since it uses as much as digits as its factorization.

650421043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 650421043 is about 25503.3535637963. The cubic root of 650421043 is about 866.4261028737.

Adding to 650421043 its reverse (340124056), we get a palindrome (990545099).

The spelling of 650421043 in words is "six hundred fifty million, four hundred twenty-one thousand, forty-three".