1422457143 has 4 divisors (see below), whose sum is σ = 1896609528. Its totient is φ = 948304760.

The previous prime is 1422457139. The next prime is 1422457171. The reversal of 1422457143 is 3417542241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1422457143 - 2² = 1422457139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422457123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237076188 + ... + 237076193.

It is an arithmetic number, because the mean of its divisors is an integer number (474152382).

Almost surely, 2^1422457143 is an apocalyptic number.

1422457143 is a deficient number, since it is larger than the sum of its proper divisors (474152385).

1422457143 is an equidigital number, since it uses as much as digits as its factorization.

1422457143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474152384.

The product of its digits is 26880, while the sum is 33.

The square root of 1422457143 is about 37715.4761735816. The cubic root of 1422457143 is about 1124.6388023656.

Adding to 1422457143 its reverse (3417542241), we get a palindrome (4839999384).

The spelling of 1422457143 in words is "one billion, four hundred twenty-two million, four hundred fifty-seven thousand, one hundred forty-three".