2151429 has 16 divisors (see below), whose sum is σ = 3341952. Its totient is φ = 1205568.

The previous prime is 2151421. The next prime is 2151433. The reversal of 2151429 is 9241512.

It is not a de Polignac number, because 2151429 - 2³ = 2151421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151399 and 2151408.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (208872).

2^2151429 is an apocalyptic number.

It is an amenable number.

2151429 is a deficient number, since it is larger than the sum of its proper divisors (1190523).

2151429 is a wasteful number, since it uses less digits than its factorization.

2151429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its digits is 720, while the sum is 24.

The square root of 2151429 is about 1466.7750338753. The cubic root of 2151429 is about 129.0948764207.

The spelling of 2151429 in words is "two million, one hundred fifty-one thousand, four hundred twenty-nine".