2142423 has 8 divisors (see below), whose sum is σ = 3174000. Its totient is φ = 1428264.

The previous prime is 2142403. The next prime is 2142431. The reversal of 2142423 is 3242412.

It is not a de Polignac number, because 2142423 - 2⁸ = 2142167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142396 and 2142405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39648 + ... + 39701.

It is an arithmetic number, because the mean of its divisors is an integer number (396750).

2^2142423 is an apocalyptic number.

2142423 is a deficient number, since it is larger than the sum of its proper divisors (1031577).

2142423 is an equidigital number, since it uses as much as digits as its factorization.

2142423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79358 (or 79352 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 2142423 is about 1463.7018138952. The cubic root of 2142423 is about 128.9144917375.

Adding to 2142423 its reverse (3242412), we get a palindrome (5384835).

The spelling of 2142423 in words is "two million, one hundred forty-two thousand, four hundred twenty-three".