424221450187 has 2 divisors, whose sum is σ = 424221450188. Its totient is φ = 424221450186.

The previous prime is 424221450161. The next prime is 424221450253. The reversal of 424221450187 is 781054122424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424221450187 - 2³¹ = 422073966539 is a prime.

It is a super-2 number, since 2×424221450187² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (424221450287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212110725093 + 212110725094.

It is an arithmetic number, because the mean of its divisors is an integer number (212110725094).

Almost surely, 2^424221450187 is an apocalyptic number.

424221450187 is a deficient number, since it is larger than the sum of its proper divisors (1).

424221450187 is an equidigital number, since it uses as much as digits as its factorization.

424221450187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 40.

The spelling of 424221450187 in words is "four hundred twenty-four billion, two hundred twenty-one million, four hundred fifty thousand, one hundred eighty-seven".