126748357 has 4 divisors (see below), whose sum is σ = 131119020. Its totient is φ = 122377696.

The previous prime is 126748351. The next prime is 126748381. The reversal of 126748357 is 753847621.

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 53714241 + 73034116 = 7329^2 + 8546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126748357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126748351) 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, 2185288 + ... + 2185345.

It is an arithmetic number, because the mean of its divisors is an integer number (32779755).

Almost surely, 2^126748357 is an apocalyptic number.

It is an amenable number.

126748357 is a deficient number, since it is larger than the sum of its proper divisors (4370663).

126748357 is an equidigital number, since it uses as much as digits as its factorization.

126748357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370662.

The product of its digits is 282240, while the sum is 43.

The square root of 126748357 is about 11258.2572807695. The cubic root of 126748357 is about 502.3203578879.

The spelling of 126748357 in words is "one hundred twenty-six million, seven hundred forty-eight thousand, three hundred fifty-seven".