2151430 has 8 divisors (see below), whose sum is σ = 3872592. Its totient is φ = 860568.

The previous prime is 2151421. The next prime is 2151433. The reversal of 2151430 is 341512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107562 + ... + 107581.

It is an arithmetic number, because the mean of its divisors is an integer number (484074).

2^2151430 is an apocalyptic number.

2151430 is a deficient number, since it is larger than the sum of its proper divisors (1721162).

2151430 is a wasteful number, since it uses less digits than its factorization.

2151430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215150.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2151430 is about 1466.7753747592. The cubic root of 2151430 is about 129.0948964221.

Adding to 2151430 its reverse (341512), we get a palindrome (2492942).

The spelling of 2151430 in words is "two million, one hundred fifty-one thousand, four hundred thirty".