126139355 has 4 divisors (see below), whose sum is σ = 151367232. Its totient is φ = 100911480.

The previous prime is 126139267. The next prime is 126139361. The reversal of 126139355 is 553931621.

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

It is not a de Polignac number, because 126139355 - 2¹² = 126135259 is a prime.

It is a super-2 number, since 2×126139355² = 31822273759632050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12613931 + ... + 12613940.

It is an arithmetic number, because the mean of its divisors is an integer number (37841808).

Almost surely, 2^126139355 is an apocalyptic number.

126139355 is a deficient number, since it is larger than the sum of its proper divisors (25227877).

126139355 is an equidigital number, since it uses as much as digits as its factorization.

126139355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25227876.

The product of its digits is 24300, while the sum is 35.

The square root of 126139355 is about 11231.1778100073. The cubic root of 126139355 is about 501.5145476586.

The spelling of 126139355 in words is "one hundred twenty-six million, one hundred thirty-nine thousand, three hundred fifty-five".