126722940 has 48 divisors (see below), whose sum is σ = 356977152. Its totient is φ = 33587776.

The previous prime is 126722909. The next prime is 126722957. The reversal of 126722940 is 49227621.

126722940 = T₂₅₁ + T₂₅₂ + ... + T₉₁₈.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3697 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (7437024).

Almost surely, 2^126722940 is an apocalyptic number.

126722940 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 126722940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178488576).

126722940 is an abundant number, since it is smaller than the sum of its proper divisors (230254212).

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

126722940 is a wasteful number, since it uses less digits than its factorization.

126722940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12826 (or 12824 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 126722940 is about 11257.1284082576. The cubic root of 126722940 is about 502.2867786754.

The spelling of 126722940 in words is "one hundred twenty-six million, seven hundred twenty-two thousand, nine hundred forty".