42346631449 has 2 divisors, whose sum is σ = 42346631450. Its totient is φ = 42346631448.

The previous prime is 42346631357. The next prime is 42346631507. The reversal of 42346631449 is 94413664324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41470471449 + 876160000 = 203643^2 + 29600^2 .

It is a cyclic number.

It is not a de Polignac number, because 42346631449 - 2¹¹ = 42346629401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42346631399 and 42346631408.

It is not a weakly prime, because it can be changed into another prime (42347631449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21173315724 + 21173315725.

It is an arithmetic number, because the mean of its divisors is an integer number (21173315725).

Almost surely, 2^42346631449 is an apocalyptic number.

It is an amenable number.

42346631449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42346631449 is an equidigital number, since it uses as much as digits as its factorization.

42346631449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 46.

The spelling of 42346631449 in words is "forty-two billion, three hundred forty-six million, six hundred thirty-one thousand, four hundred forty-nine".