126969696 has 72 divisors (see below), whose sum is σ = 412658064. Its totient is φ = 36276480.

The previous prime is 126969679. The next prime is 126969697. The reversal of 126969696 is 696969621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×126969696² = 32242607404664832, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126969697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29475 + ... + 33506.

It is an arithmetic number, because the mean of its divisors is an integer number (5731362).

Almost surely, 2^126969696 is an apocalyptic number.

126969696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126969696 is an abundant number, since it is smaller than the sum of its proper divisors (285688368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126969696 is a wasteful number, since it uses less digits than its factorization.

126969696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63004 (or 62993 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 126969696 is about 11268.0830667865. The cubic root of 126969696 is about 502.6125863419.

The spelling of 126969696 in words is "one hundred twenty-six million, nine hundred sixty-nine thousand, six hundred ninety-six".