2145429 has 24 divisors (see below), whose sum is σ = 3642912. Its totient is φ = 1199520.

The previous prime is 2145421. The next prime is 2145433. The reversal of 2145429 is 9245412.

It is not a de Polignac number, because 2145429 - 2³ = 2145421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (151788).

2^2145429 is an apocalyptic number.

It is an amenable number.

2145429 is a deficient number, since it is larger than the sum of its proper divisors (1497483).

2145429 is a wasteful number, since it uses less digits than its factorization.

2145429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1694 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2145429 is about 1464.7283024507. The cubic root of 2145429 is about 128.9747561925.

The spelling of 2145429 in words is "two million, one hundred forty-five thousand, four hundred twenty-nine".