126771220 has 48 divisors (see below), whose sum is σ = 273934080. Its totient is φ = 49256064.

The previous prime is 126771217. The next prime is 126771233. The reversal of 126771220 is 22177621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147151 + ... + 148009.

It is an arithmetic number, because the mean of its divisors is an integer number (5706960).

Almost surely, 2^126771220 is an apocalyptic number.

126771220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126771220 is an abundant number, since it is smaller than the sum of its proper divisors (147162860).

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

126771220 is a wasteful number, since it uses less digits than its factorization.

126771220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 126771220 is about 11259.2726230428. The cubic root of 126771220 is about 502.3505590944.

The spelling of 126771220 in words is "one hundred twenty-six million, seven hundred seventy-one thousand, two hundred twenty".