166241405 has 32 divisors (see below), whose sum is σ = 222963840. Its totient is φ = 117976320.

The previous prime is 166241399. The next prime is 166241423. The reversal of 166241405 is 504142661.

It is not a de Polignac number, because 166241405 - 2¹⁶ = 166175869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725831 + ... + 726059.

It is an arithmetic number, because the mean of its divisors is an integer number (6967620).

Almost surely, 2^166241405 is an apocalyptic number.

It is an amenable number.

166241405 is a deficient number, since it is larger than the sum of its proper divisors (56722435).

166241405 is a wasteful number, since it uses less digits than its factorization.

166241405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 166241405 is about 12893.4636541156. The cubic root of 166241405 is about 549.8527484586.

The spelling of 166241405 in words is "one hundred sixty-six million, two hundred forty-one thousand, four hundred five".