126978801 has 8 divisors (see below), whose sum is σ = 169361280. Its totient is φ = 84624432.

The previous prime is 126978781. The next prime is 126978809. The reversal of 126978801 is 108879621.

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

It is not a de Polignac number, because 126978801 - 2¹⁹ = 126454513 is a prime.

It is a super-2 number, since 2×126978801² = 32247231806795202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126978809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8280 + ... + 17958.

It is an arithmetic number, because the mean of its divisors is an integer number (21170160).

Almost surely, 2^126978801 is an apocalyptic number.

It is an amenable number.

126978801 is a deficient number, since it is larger than the sum of its proper divisors (42382479).

126978801 is an equidigital number, since it uses as much as digits as its factorization.

126978801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14055.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 126978801 is about 11268.4870767996. The cubic root of 126978801 is about 502.6246001750.

The spelling of 126978801 in words is "one hundred twenty-six million, nine hundred seventy-eight thousand, eight hundred one".