125042212 has 6 divisors (see below), whose sum is σ = 218823878. Its totient is φ = 62521104.

The previous prime is 125042209. The next prime is 125042219. The reversal of 125042212 is 212240521.

It can be written as a sum of positive squares in only one way, i.e., 123121216 + 1920996 = 11096^2 + 1386^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125042212.

It is not an unprimeable number, because it can be changed into a prime (125042219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15630273 + ... + 15630280.

Almost surely, 2^125042212 is an apocalyptic number.

It is an amenable number.

125042212 is a deficient number, since it is larger than the sum of its proper divisors (93781666).

125042212 is a wasteful number, since it uses less digits than its factorization.

125042212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31260557 (or 31260555 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 125042212 is about 11182.2275061814. The cubic root of 125042212 is about 500.0562763324.

Adding to 125042212 its reverse (212240521), we get a palindrome (337282733).

The spelling of 125042212 in words is "one hundred twenty-five million, forty-two thousand, two hundred twelve".