1420143123 has 32 divisors (see below), whose sum is σ = 2201633280. Its totient is φ = 797529600.

The previous prime is 1420143107. The next prime is 1420143149. The reversal of 1420143123 is 3213410241.

It is not a de Polignac number, because 1420143123 - 2⁴ = 1420143107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1420143123.

It is not an unprimeable number, because it can be changed into a prime (1420143103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292411 + ... + 297227.

It is an arithmetic number, because the mean of its divisors is an integer number (68801040).

Almost surely, 2^1420143123 is an apocalyptic number.

1420143123 is a deficient number, since it is larger than the sum of its proper divisors (781490157).

1420143123 is a wasteful number, since it uses less digits than its factorization.

1420143123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1420143123 is about 37684.7863600154. The cubic root of 1420143123 is about 1124.0286260086.

Adding to 1420143123 its reverse (3213410241), we get a palindrome (4633553364).

The spelling of 1420143123 in words is "one billion, four hundred twenty million, one hundred forty-three thousand, one hundred twenty-three".