126878938 has 4 divisors (see below), whose sum is σ = 190318410. Its totient is φ = 63439468.

The previous prime is 126878929. The next prime is 126878951. The reversal of 126878938 is 839878621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839878621 = 349 ⋅2406529.

It can be written as a sum of positive squares in only one way, i.e., 113358609 + 13520329 = 10647^2 + 3677^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31719733 + ... + 31719736.

Almost surely, 2^126878938 is an apocalyptic number.

126878938 is a deficient number, since it is larger than the sum of its proper divisors (63439472).

126878938 is an equidigital number, since it uses as much as digits as its factorization.

126878938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63439471.

The product of its digits is 1161216, while the sum is 52.

The square root of 126878938 is about 11264.0551312571. The cubic root of 126878938 is about 502.4928018902.

The spelling of 126878938 in words is "one hundred twenty-six million, eight hundred seventy-eight thousand, nine hundred thirty-eight".