40203429 has 16 divisors (see below), whose sum is σ = 61373952. Its totient is φ = 22931568.

The previous prime is 40203421. The next prime is 40203433. The reversal of 40203429 is 92430204.

It is a happy number.

40203429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40203429 - 2³ = 40203421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40203399 and 40203408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40203421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12942 + ... + 15744.

It is an arithmetic number, because the mean of its divisors is an integer number (3835872).

Almost surely, 2^40203429 is an apocalyptic number.

It is an amenable number.

40203429 is a deficient number, since it is larger than the sum of its proper divisors (21170523).

40203429 is a wasteful number, since it uses less digits than its factorization.

40203429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40203429 is about 6340.6173989605. The cubic root of 40203429 is about 342.5739737567.

The spelling of 40203429 in words is "forty million, two hundred three thousand, four hundred twenty-nine".