126143077 has 4 divisors (see below), whose sum is σ = 133563276. Its totient is φ = 118722880.

The previous prime is 126143057. The next prime is 126143081. The reversal of 126143077 is 770341621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66683556 + 59459521 = 8166^2 + 7711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126143077 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126143057) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3710074 + ... + 3710107.

It is an arithmetic number, because the mean of its divisors is an integer number (33390819).

Almost surely, 2^126143077 is an apocalyptic number.

126143077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

126143077 is a deficient number, since it is larger than the sum of its proper divisors (7420199).

126143077 is an equidigital number, since it uses as much as digits as its factorization.

126143077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420198.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 126143077 is about 11231.3435082362. The cubic root of 126143077 is about 501.5194803480.

Adding to 126143077 its reverse (770341621), we get a palindrome (896484698).

The spelling of 126143077 in words is "one hundred twenty-six million, one hundred forty-three thousand, seventy-seven".