169866942 has 32 divisors (see below), whose sum is σ = 397300992. Its totient is φ = 47404224.

The previous prime is 169866929. The next prime is 169866943. The reversal of 169866942 is 249668961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169866943) 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 15 ways as a sum of consecutive naturals, for example, 45223 + ... + 48834.

It is an arithmetic number, because the mean of its divisors is an integer number (12415656).

Almost surely, 2^169866942 is an apocalyptic number.

169866942 is an abundant number, since it is smaller than the sum of its proper divisors (227434050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169866942 is a wasteful number, since it uses less digits than its factorization.

169866942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94112.

The product of its digits is 1119744, while the sum is 51.

The square root of 169866942 is about 13033.3012702078. The cubic root of 169866942 is about 553.8212593541.

The spelling of 169866942 in words is "one hundred sixty-nine million, eight hundred sixty-six thousand, nine hundred forty-two".