1423242187 has 2 divisors, whose sum is σ = 1423242188. Its totient is φ = 1423242186.

The previous prime is 1423242181. The next prime is 1423242211. The reversal of 1423242187 is 7812423241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1423242187 - 2¹¹ = 1423240139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423242181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711621093 + 711621094.

It is an arithmetic number, because the mean of its divisors is an integer number (711621094).

Almost surely, 2^1423242187 is an apocalyptic number.

1423242187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423242187 is an equidigital number, since it uses as much as digits as its factorization.

1423242187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 1423242187 is about 37725.8821898176. The cubic root of 1423242187 is about 1124.8456577069.

The spelling of 1423242187 in words is "one billion, four hundred twenty-three million, two hundred forty-two thousand, one hundred eighty-seven".