126804981 has 8 divisors (see below), whose sum is σ = 169268320. Its totient is φ = 84439152.

The previous prime is 126804971. The next prime is 126805009. The reversal of 126804981 is 189408621.

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

It is not a de Polignac number, because 126804981 - 2²¹ = 124707829 is a prime.

It is a super-2 number, since 2×126804981² = 32159006412820722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126804901) 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, 21286 + ... + 26583.

It is an arithmetic number, because the mean of its divisors is an integer number (21158540).

Almost surely, 2^126804981 is an apocalyptic number.

It is an amenable number.

126804981 is a deficient number, since it is larger than the sum of its proper divisors (42463339).

126804981 is an equidigital number, since it uses as much as digits as its factorization.

126804981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48755.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 126804981 is about 11260.7717763926. The cubic root of 126804981 is about 502.3951495303.

The spelling of 126804981 in words is "one hundred twenty-six million, eight hundred four thousand, nine hundred eighty-one".