126289155 has 8 divisors (see below), whose sum is σ = 202062672. Its totient is φ = 67354208.

The previous prime is 126289147. The next prime is 126289157. The reversal of 126289155 is 551982621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126289155 - 2³ = 126289147 is a prime.

It is a super-2 number, since 2×126289155² = 31897901341228050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126289157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4209624 + ... + 4209653.

It is an arithmetic number, because the mean of its divisors is an integer number (25257834).

Almost surely, 2^126289155 is an apocalyptic number.

126289155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126289155 is a deficient number, since it is larger than the sum of its proper divisors (75773517).

126289155 is an equidigital number, since it uses as much as digits as its factorization.

126289155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419285.

The product of its digits is 43200, while the sum is 39.

The square root of 126289155 is about 11237.8447666801. The cubic root of 126289155 is about 501.7129979076.

The spelling of 126289155 in words is "one hundred twenty-six million, two hundred eighty-nine thousand, one hundred fifty-five".