126821152 has 12 divisors (see below), whose sum is σ = 249679206. Its totient is φ = 63410560.

The previous prime is 126821141. The next prime is 126821153. The reversal of 126821152 is 251128621.

It can be written as a sum of positive squares in only one way, i.e., 96746896 + 30074256 = 9836^2 + 5484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 126821152.

It is not an unprimeable number, because it can be changed into a prime (126821153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1981549 + ... + 1981612.

Almost surely, 2^126821152 is an apocalyptic number.

It is an amenable number.

126821152 is a deficient number, since it is larger than the sum of its proper divisors (122858054).

126821152 is an equidigital number, since it uses as much as digits as its factorization.

126821152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963171 (or 3963163 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 126821152 is about 11261.4897771121. The cubic root of 126821152 is about 502.4165048603.

Adding to 126821152 its reverse (251128621), we get a palindrome (377949773).

The spelling of 126821152 in words is "one hundred twenty-six million, eight hundred twenty-one thousand, one hundred fifty-two".