126399060 has 72 divisors (see below), whose sum is σ = 385650720. Its totient is φ = 33509568.

The previous prime is 126399041. The next prime is 126399061. The reversal of 126399060 is 60993621.

126399060 is a `hidden beast` number, since 12 + 639 + 9 + 0 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126399061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30259 + ... + 34181.

It is an arithmetic number, because the mean of its divisors is an integer number (5356260).

Almost surely, 2^126399060 is an apocalyptic number.

126399060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126399060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192825360).

126399060 is an abundant number, since it is smaller than the sum of its proper divisors (259251660).

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

126399060 is a wasteful number, since it uses less digits than its factorization.

126399060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117 (or 4112 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 126399060 is about 11242.7336533425. The cubic root of 126399060 is about 501.8584967539.

The spelling of 126399060 in words is "one hundred twenty-six million, three hundred ninety-nine thousand, sixty".