126779904 has 120 divisors (see below), whose sum is σ = 379819440. Its totient is φ = 42218496.

The previous prime is 126779893. The next prime is 126779921. The reversal of 126779904 is 409977621.

It is a self number, because there is not a number n which added to its sum of digits gives 126779904.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123907 + ... + 124925.

It is an arithmetic number, because the mean of its divisors is an integer number (3165162).

Almost surely, 2^126779904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126779904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189909720).

126779904 is an abundant number, since it is smaller than the sum of its proper divisors (253039536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126779904 is an frugal number, since it uses more digits than its factorization.

126779904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 126779904 is about 11259.6582541390. The cubic root of 126779904 is about 502.3620293967.

The spelling of 126779904 in words is "one hundred twenty-six million, seven hundred seventy-nine thousand, nine hundred four".