126155920 has 120 divisors (see below), whose sum is σ = 335728512. Its totient is φ = 43718400.

The previous prime is 126155891. The next prime is 126155941. The reversal of 126155920 is 29551621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465385 + ... + 465655.

Almost surely, 2^126155920 is an apocalyptic number.

126155920 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 126155920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167864256).

126155920 is an abundant number, since it is smaller than the sum of its proper divisors (209572592).

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

126155920 is a wasteful number, since it uses less digits than its factorization.

126155920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 126155920 is about 11231.9152418454. The cubic root of 126155920 is about 501.5365001646.

The spelling of 126155920 in words is "one hundred twenty-six million, one hundred fifty-five thousand, nine hundred twenty".