126155916 has 72 divisors (see below), whose sum is σ = 332514000. Its totient is φ = 40279680.

The previous prime is 126155891. The next prime is 126155941. The reversal of 126155916 is 619551621.

126155916 is a `hidden beast` number, since 1 + 2 + 61 + 5 + 591 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (126155891) and next prime (126155941).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155151 + ... + 155961.

It is an arithmetic number, because the mean of its divisors is an integer number (4618250).

Almost surely, 2^126155916 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 126155916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166257000).

126155916 is an abundant number, since it is smaller than the sum of its proper divisors (206358084).

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

126155916 is a wasteful number, since it uses less digits than its factorization.

126155916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 994 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 126155916 is about 11231.9150637814. The cubic root of 126155916 is about 501.5364948639.

The spelling of 126155916 in words is "one hundred twenty-six million, one hundred fifty-five thousand, nine hundred sixteen".