203142399 has 4 divisors (see below), whose sum is σ = 270856536. Its totient is φ = 135428264.

The previous prime is 203142397. The next prime is 203142403. The reversal of 203142399 is 993241302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203142399 - 2¹ = 203142397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203142397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33857064 + ... + 33857069.

It is an arithmetic number, because the mean of its divisors is an integer number (67714134).

Almost surely, 2^203142399 is an apocalyptic number.

203142399 is a deficient number, since it is larger than the sum of its proper divisors (67714137).

203142399 is an equidigital number, since it uses as much as digits as its factorization.

203142399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67714136.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 203142399 is about 14252.8031979678. The cubic root of 203142399 is about 587.8504553986.

The spelling of 203142399 in words is "two hundred three million, one hundred forty-two thousand, three hundred ninety-nine".