126655440 has 160 divisors (see below), whose sum is σ = 427472640. Its totient is φ = 30892032.

The previous prime is 126655391. The next prime is 126655453. The reversal of 126655440 is 44556621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150541 + ... + 151379.

It is an arithmetic number, because the mean of its divisors is an integer number (2671704).

Almost surely, 2^126655440 is an apocalyptic number.

126655440 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 126655440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213736320).

126655440 is an abundant number, since it is smaller than the sum of its proper divisors (300817200).

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

126655440 is a wasteful number, since it uses less digits than its factorization.

126655440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 126655440 is about 11254.1299086158. The cubic root of 126655440 is about 502.1975804630.

The spelling of 126655440 in words is "one hundred twenty-six million, six hundred fifty-five thousand, four hundred forty".