126723967 has 8 divisors (see below), whose sum is σ = 137299536. Its totient is φ = 116495232.

The previous prime is 126723959. The next prime is 126723973. The reversal of 126723967 is 769327621.

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 126723967 - 2³ = 126723959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126723067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85948 + ... + 87409.

It is an arithmetic number, because the mean of its divisors is an integer number (17162442).

Almost surely, 2^126723967 is an apocalyptic number.

126723967 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

126723967 is a deficient number, since it is larger than the sum of its proper divisors (10575569).

126723967 is a wasteful number, since it uses less digits than its factorization.

126723967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173417.

The product of its digits is 190512, while the sum is 43.

The square root of 126723967 is about 11257.1740237059. The cubic root of 126723967 is about 502.2881355650.

The spelling of 126723967 in words is "one hundred twenty-six million, seven hundred twenty-three thousand, nine hundred sixty-seven".