203145429 has 16 divisors (see below), whose sum is σ = 279227648. Its totient is φ = 131274432.

The previous prime is 203145409. The next prime is 203145443. The reversal of 203145429 is 924541302.

It is not a de Polignac number, because 203145429 - 2⁷ = 203145301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203145396 and 203145405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203145409) 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, 27444 + ... + 34050.

It is an arithmetic number, because the mean of its divisors is an integer number (17451728).

Almost surely, 2^203145429 is an apocalyptic number.

It is an amenable number.

203145429 is a deficient number, since it is larger than the sum of its proper divisors (76082219).

203145429 is a wasteful number, since it uses less digits than its factorization.

203145429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 203145429 is about 14252.9094924510. The cubic root of 203145429 is about 587.8533781070.

The spelling of 203145429 in words is "two hundred three million, one hundred forty-five thousand, four hundred twenty-nine".