126697949 has 8 divisors (see below), whose sum is σ = 144960960. Its totient is φ = 108475776.

The previous prime is 126697939. The next prime is 126697969. The reversal of 126697949 is 949796621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126697949 - 2¹⁶ = 126632413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126697949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126697919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3239 + ... + 16244.

It is an arithmetic number, because the mean of its divisors is an integer number (18120120).

Almost surely, 2^126697949 is an apocalyptic number.

It is an amenable number.

126697949 is a deficient number, since it is larger than the sum of its proper divisors (18263011).

126697949 is an equidigital number, since it uses as much as digits as its factorization.

126697949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20419.

The product of its digits is 1469664, while the sum is 53.

The square root of 126697949 is about 11256.0183457562. The cubic root of 126697949 is about 502.2537578870.

The spelling of 126697949 in words is "one hundred twenty-six million, six hundred ninety-seven thousand, nine hundred forty-nine".