126719961 has 8 divisors (see below), whose sum is σ = 169021440. Its totient is φ = 84449232.

The previous prime is 126719959. The next prime is 126719977. The reversal of 126719961 is 169917621.

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

It is not a de Polignac number, because 126719961 - 2¹ = 126719959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126719941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855 + ... + 16643.

It is an arithmetic number, because the mean of its divisors is an integer number (21127680).

Almost surely, 2^126719961 is an apocalyptic number.

It is an amenable number.

126719961 is a deficient number, since it is larger than the sum of its proper divisors (42301479).

126719961 is a wasteful number, since it uses less digits than its factorization.

126719961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375.

The product of its digits is 40824, while the sum is 42.

The square root of 126719961 is about 11256.9960913203. The cubic root of 126719961 is about 502.2828427292.

The spelling of 126719961 in words is "one hundred twenty-six million, seven hundred nineteen thousand, nine hundred sixty-one".