126216965 has 16 divisors (see below), whose sum is σ = 178682880. Its totient is φ = 83756160.

The previous prime is 126216941. The next prime is 126216967. The reversal of 126216965 is 569612621.

It is not a de Polignac number, because 126216965 - 2¹⁰ = 126215941 is a prime.

It is a super-2 number, since 2×126216965² = 31861444507622450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126216967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57080 + ... + 59249.

It is an arithmetic number, because the mean of its divisors is an integer number (11167680).

Almost surely, 2^126216965 is an apocalyptic number.

It is an amenable number.

126216965 is a deficient number, since it is larger than the sum of its proper divisors (52465915).

126216965 is a wasteful number, since it uses less digits than its factorization.

126216965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116372.

The product of its digits is 38880, while the sum is 38.

The square root of 126216965 is about 11234.6323927399. The cubic root of 126216965 is about 501.6173825064.

The spelling of 126216965 in words is "one hundred twenty-six million, two hundred sixteen thousand, nine hundred sixty-five".