2151423 has 12 divisors (see below), whose sum is σ = 3215160. Its totient is φ = 1384656.

The previous prime is 2151421. The next prime is 2151433. The reversal of 2151423 is 3241512.

It is not a de Polignac number, because 2151423 - 2¹ = 2151421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151396 and 2151405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3861 + ... + 4382.

It is an arithmetic number, because the mean of its divisors is an integer number (267930).

2^2151423 is an apocalyptic number.

2151423 is a deficient number, since it is larger than the sum of its proper divisors (1063737).

2151423 is a wasteful number, since it uses less digits than its factorization.

2151423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278 (or 8275 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2151423 is about 1466.7729885705. The cubic root of 2151423 is about 129.0947564121.

Adding to 2151423 its reverse (3241512), we get a palindrome (5392935).

The spelling of 2151423 in words is "two million, one hundred fifty-one thousand, four hundred twenty-three".