2154000423 has 4 divisors (see below), whose sum is σ = 2872000568. Its totient is φ = 1436000280.

The previous prime is 2154000389. The next prime is 2154000427. The reversal of 2154000423 is 3240004512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2154000423 - 2²⁰ = 2152951847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154000423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154000427) 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, 359000068 + ... + 359000073.

It is an arithmetic number, because the mean of its divisors is an integer number (718000142).

Almost surely, 2^2154000423 is an apocalyptic number.

2154000423 is a deficient number, since it is larger than the sum of its proper divisors (718000145).

2154000423 is an equidigital number, since it uses as much as digits as its factorization.

2154000423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718000144.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2154000423 is about 46411.2101005781. The cubic root of 2154000423 is about 1291.4628804349.

Adding to 2154000423 its reverse (3240004512), we get a palindrome (5394004935).

The spelling of 2154000423 in words is "two billion, one hundred fifty-four million, four hundred twenty-three", and thus it is an aban number.