1423432143 has 64 divisors (see below), whose sum is σ = 2560896000. Its totient is φ = 764007552.

The previous prime is 1423432121. The next prime is 1423432147. The reversal of 1423432143 is 3412343241.

It is not a de Polignac number, because 1423432143 - 2⁵ = 1423432111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423432147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199288 + ... + 206306.

It is an arithmetic number, because the mean of its divisors is an integer number (40014000).

Almost surely, 2^1423432143 is an apocalyptic number.

1423432143 is a deficient number, since it is larger than the sum of its proper divisors (1137463857).

1423432143 is a wasteful number, since it uses less digits than its factorization.

1423432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101 (or 7095 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1423432143 is about 37728.3996877684. The cubic root of 1423432143 is about 1124.8956987747.

Adding to 1423432143 its reverse (3412343241), we get a palindrome (4835775384).

The spelling of 1423432143 in words is "one billion, four hundred twenty-three million, four hundred thirty-two thousand, one hundred forty-three".