126216436 has 12 divisors (see below), whose sum is σ = 221027940. Its totient is φ = 63065600.

The previous prime is 126216427. The next prime is 126216457. The reversal of 126216436 is 634612621.

It can be written as a sum of positive squares in 2 ways, for example, as 105966436 + 20250000 = 10294^2 + 4500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126216398 and 126216407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3451 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (18418995).

Almost surely, 2^126216436 is an apocalyptic number.

It is an amenable number.

126216436 is a deficient number, since it is larger than the sum of its proper divisors (94811504).

126216436 is a wasteful number, since it uses less digits than its factorization.

126216436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21314 (or 21312 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 126216436 is about 11234.6088494438. The cubic root of 126216436 is about 501.6166817132.

The spelling of 126216436 in words is "one hundred twenty-six million, two hundred sixteen thousand, four hundred thirty-six".