126666390154 has 16 divisors (see below), whose sum is σ = 190604219400. Its totient is φ = 63131765760.

The previous prime is 126666390131. The next prime is 126666390157. The reversal of 126666390154 is 451093666621.

It can be written as a sum of positive squares in 4 ways, for example, as 121825431225 + 4840958929 = 349035^2 + 69577^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126666390098 and 126666390107.

It is not an unprimeable number, because it can be changed into a prime (126666390157) 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, 2318982 + ... + 2372974.

Almost surely, 2^126666390154 is an apocalyptic number.

126666390154 is a deficient number, since it is larger than the sum of its proper divisors (63937829246).

126666390154 is a wasteful number, since it uses less digits than its factorization.

126666390154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57705.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 126666390154 in words is "one hundred twenty-six billion, six hundred sixty-six million, three hundred ninety thousand, one hundred fifty-four".