42450184649 has 2 divisors, whose sum is σ = 42450184650. Its totient is φ = 42450184648.

The previous prime is 42450184643. The next prime is 42450184681. The reversal of 42450184649 is 94648105424.

42450184649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37299969424 + 5150215225 = 193132^2 + 71765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42450184649 is a prime.

It is not a weakly prime, because it can be changed into another prime (42450184643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225092324 + 21225092325.

It is an arithmetic number, because the mean of its divisors is an integer number (21225092325).

Almost surely, 2^42450184649 is an apocalyptic number.

It is an amenable number.

42450184649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450184649 is an equidigital number, since it uses as much as digits as its factorization.

42450184649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 42450184649 in words is "forty-two billion, four hundred fifty million, one hundred eighty-four thousand, six hundred forty-nine".