126903205 has 16 divisors (see below), whose sum is σ = 178907904. Its totient is φ = 85193280.

The previous prime is 126903197. The next prime is 126903233. The reversal of 126903205 is 502309621.

It is not a de Polignac number, because 126903205 - 2³ = 126903197 is a prime.

It is a super-2 number, since 2×126903205² = 32208846878544050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 88029 + ... + 89458.

It is an arithmetic number, because the mean of its divisors is an integer number (11181744).

Almost surely, 2^126903205 is an apocalyptic number.

It is an amenable number.

126903205 is a deficient number, since it is larger than the sum of its proper divisors (52004699).

126903205 is a wasteful number, since it uses less digits than its factorization.

126903205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177516.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 126903205 is about 11265.1322673105. The cubic root of 126903205 is about 502.5248356165.

The spelling of 126903205 in words is "one hundred twenty-six million, nine hundred three thousand, two hundred five".