126971872 has 12 divisors (see below), whose sum is σ = 249975936. Its totient is φ = 63485920.

The previous prime is 126971869. The next prime is 126971879. The reversal of 126971872 is 278179621.

It is a super-2 number, since 2×126971872² = 32243712558368768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126971879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983904 + ... + 1983967.

It is an arithmetic number, because the mean of its divisors is an integer number (20831328).

Almost surely, 2^126971872 is an apocalyptic number.

It is an amenable number.

126971872 is a deficient number, since it is larger than the sum of its proper divisors (123004064).

126971872 is an equidigital number, since it uses as much as digits as its factorization.

126971872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967881 (or 3967873 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 126971872 is about 11268.1796222815. The cubic root of 126971872 is about 502.6154575749.

The spelling of 126971872 in words is "one hundred twenty-six million, nine hundred seventy-one thousand, eight hundred seventy-two".