42310789 has 2 divisors, whose sum is σ = 42310790. Its totient is φ = 42310788.

The previous prime is 42310781. The next prime is 42310813. The reversal of 42310789 is 98701324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40768225 + 1542564 = 6385^2 + 1242^2 .

It is a cyclic number.

It is not a de Polignac number, because 42310789 - 2³ = 42310781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42310781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155394 + 21155395.

It is an arithmetic number, because the mean of its divisors is an integer number (21155395).

Almost surely, 2^42310789 is an apocalyptic number.

It is an amenable number.

42310789 is a deficient number, since it is larger than the sum of its proper divisors (1).

42310789 is an equidigital number, since it uses as much as digits as its factorization.

42310789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 42310789 is about 6504.6743961554. The cubic root of 42310789 is about 348.4579478800.

The spelling of 42310789 in words is "forty-two million, three hundred ten thousand, seven hundred eighty-nine".