126878615 has 16 divisors (see below), whose sum is σ = 158146560. Its totient is φ = 97648800.

The previous prime is 126878611. The next prime is 126878621. The reversal of 126878615 is 516878621.

It is a happy number.

It is not a de Polignac number, because 126878615 - 2² = 126878611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126878611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9290 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (9884160).

Almost surely, 2^126878615 is an apocalyptic number.

126878615 is a deficient number, since it is larger than the sum of its proper divisors (31267945).

126878615 is an equidigital number, since it uses as much as digits as its factorization.

126878615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262.

The product of its digits is 161280, while the sum is 44.

The square root of 126878615 is about 11264.0407936051. The cubic root of 126878615 is about 502.4923754856.

The spelling of 126878615 in words is "one hundred twenty-six million, eight hundred seventy-eight thousand, six hundred fifteen".