126723206 has 4 divisors (see below), whose sum is σ = 190084812. Its totient is φ = 63361602.

The previous prime is 126723173. The next prime is 126723211. The reversal of 126723206 is 602327621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602327621 = 7 ⋅86046803.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31680800 + ... + 31680803.

It is an arithmetic number, because the mean of its divisors is an integer number (47521203).

Almost surely, 2^126723206 is an apocalyptic number.

126723206 is a deficient number, since it is larger than the sum of its proper divisors (63361606).

126723206 is an equidigital number, since it uses as much as digits as its factorization.

126723206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63361605.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 126723206 is about 11257.1402229874. The cubic root of 126723206 is about 502.2871301198.

The spelling of 126723206 in words is "one hundred twenty-six million, seven hundred twenty-three thousand, two hundred six".