42344001220387 has 2 divisors, whose sum is σ = 42344001220388. Its totient is φ = 42344001220386.

The previous prime is 42344001220369. The next prime is 42344001220427. The reversal of 42344001220387 is 78302210044324.

It is a happy number.

It is an a-pointer prime, because the next prime (42344001220427) can be obtained adding 42344001220387 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42344001220387 - 2¹⁵ = 42344001187619 is a prime.

It is not a weakly prime, because it can be changed into another prime (42344001223387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172000610193 + 21172000610194.

It is an arithmetic number, because the mean of its divisors is an integer number (21172000610194).

Almost surely, 2^{42344001220387} is an apocalyptic number.

42344001220387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42344001220387 is an equidigital number, since it uses as much as digits as its factorization.

42344001220387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 40.

The spelling of 42344001220387 in words is "forty-two trillion, three hundred forty-four billion, one million, two hundred twenty thousand, three hundred eighty-seven".