42306036649 has 2 divisors, whose sum is σ = 42306036650. Its totient is φ = 42306036648.

The previous prime is 42306036607. The next prime is 42306036683. The reversal of 42306036649 is 94663060324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30952068624 + 11353968025 = 175932^2 + 106555^2 .

It is a cyclic number.

It is not a de Polignac number, because 42306036649 - 2¹⁵ = 42306003881 is a prime.

It is a super-2 number, since 2×42306036649² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42306036349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21153018324 + 21153018325.

It is an arithmetic number, because the mean of its divisors is an integer number (21153018325).

Almost surely, 2^42306036649 is an apocalyptic number.

It is an amenable number.

42306036649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42306036649 is an equidigital number, since it uses as much as digits as its factorization.

42306036649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 42306036649 in words is "forty-two billion, three hundred six million, thirty-six thousand, six hundred forty-nine".