2142215423 has 4 divisors (see below), whose sum is σ = 2235355248. Its totient is φ = 2049075600.

The previous prime is 2142215419. The next prime is 2142215431. The reversal of 2142215423 is 3245122412.

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 2142215423 - 2² = 2142215419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142215392 and 2142215401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142215443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46569878 + ... + 46569923.

It is an arithmetic number, because the mean of its divisors is an integer number (558838812).

Almost surely, 2^2142215423 is an apocalyptic number.

2142215423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2142215423 is a deficient number, since it is larger than the sum of its proper divisors (93139825).

2142215423 is an equidigital number, since it uses as much as digits as its factorization.

2142215423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93139824.

The product of its digits is 3840, while the sum is 26.

The square root of 2142215423 is about 46284.0731029584. The cubic root of 2142215423 is about 1289.1032814209.

Adding to 2142215423 its reverse (3245122412), we get a palindrome (5387337835).

The spelling of 2142215423 in words is "two billion, one hundred forty-two million, two hundred fifteen thousand, four hundred twenty-three".