2120142423 has 16 divisors (see below), whose sum is σ = 3232085760. Its totient is φ = 1210987776.

The previous prime is 2120142407. The next prime is 2120142443. The reversal of 2120142423 is 3242410212.

It is not a de Polignac number, because 2120142423 - 2⁴ = 2120142407 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 2120142423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120142443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31111 + ... + 72167.

It is an arithmetic number, because the mean of its divisors is an integer number (202005360).

Almost surely, 2^2120142423 is an apocalyptic number.

2120142423 is a deficient number, since it is larger than the sum of its proper divisors (1111943337).

2120142423 is a wasteful number, since it uses less digits than its factorization.

2120142423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43526.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2120142423 is about 46045.0043218588. The cubic root of 2120142423 is about 1284.6604245360.

Adding to 2120142423 its reverse (3242410212), we get a palindrome (5362552635).

The spelling of 2120142423 in words is "two billion, one hundred twenty million, one hundred forty-two thousand, four hundred twenty-three".