203142435458 has 4 divisors (see below), whose sum is σ = 304713653190. Its totient is φ = 101571217728.

The previous prime is 203142435449. The next prime is 203142435539. The reversal of 203142435458 is 854534241302.

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

It can be written as a sum of positive squares in only one way, i.e., 185577439369 + 17564996089 = 430787^2 + 132533^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50785608863 + ... + 50785608866.

Almost surely, 2^203142435458 is an apocalyptic number.

203142435458 is a deficient number, since it is larger than the sum of its proper divisors (101571217732).

203142435458 is a wasteful number, since it uses less digits than its factorization.

203142435458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101571217731.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 203142435458 in words is "two hundred three billion, one hundred forty-two million, four hundred thirty-five thousand, four hundred fifty-eight".