126709138 has 8 divisors (see below), whose sum is σ = 200067120. Its totient is φ = 60020100.

The previous prime is 126709123. The next prime is 126709151. The reversal of 126709138 is 831907621.

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

It is a junction number, because it is equal to n+sod(n) for n = 126709097 and 126709106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667188 + ... + 1667263.

It is an arithmetic number, because the mean of its divisors is an integer number (25008390).

Almost surely, 2^126709138 is an apocalyptic number.

126709138 is a deficient number, since it is larger than the sum of its proper divisors (73357982).

126709138 is a wasteful number, since it uses less digits than its factorization.

126709138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334472.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 126709138 is about 11256.5153577828. The cubic root of 126709138 is about 502.2685425302.

The spelling of 126709138 in words is "one hundred twenty-six million, seven hundred nine thousand, one hundred thirty-eight".