126215612 has 6 divisors (see below), whose sum is σ = 220877328. Its totient is φ = 63107804.

The previous prime is 126215591. The next prime is 126215647. The reversal of 126215612 is 216512621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776948 + ... + 15776955.

It is an arithmetic number, because the mean of its divisors is an integer number (36812888).

Almost surely, 2^126215612 is an apocalyptic number.

It is an amenable number.

126215612 is a deficient number, since it is larger than the sum of its proper divisors (94661716).

126215612 is a wasteful number, since it uses less digits than its factorization.

126215612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31553907 (or 31553905 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 126215612 is about 11234.5721769901. The cubic root of 126215612 is about 501.6155901146.

The spelling of 126215612 in words is "one hundred twenty-six million, two hundred fifteen thousand, six hundred twelve".