166269143 has 4 divisors (see below), whose sum is σ = 168750840. Its totient is φ = 163787448.

The previous prime is 166269121. The next prime is 166269179. The reversal of 166269143 is 341962661.

166269143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341962661 = 2141 ⋅159721.

It is a cyclic number.

It is not a de Polignac number, because 166269143 - 2¹⁶ = 166203607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166269097 and 166269106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166269113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240748 + ... + 1240881.

It is an arithmetic number, because the mean of its divisors is an integer number (42187710).

Almost surely, 2^166269143 is an apocalyptic number.

166269143 is a deficient number, since it is larger than the sum of its proper divisors (2481697).

166269143 is an equidigital number, since it uses as much as digits as its factorization.

166269143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481696.

The product of its digits is 46656, while the sum is 38.

The square root of 166269143 is about 12894.5392705595. The cubic root of 166269143 is about 549.8833284202.

The spelling of 166269143 in words is "one hundred sixty-six million, two hundred sixty-nine thousand, one hundred forty-three".