166123702 has 4 divisors (see below), whose sum is σ = 249185556. Its totient is φ = 83061850.

The previous prime is 166123697. The next prime is 166123703. The reversal of 166123702 is 207321661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 207321661 = 12487 ⋅16603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166123703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41530924 + ... + 41530927.

It is an arithmetic number, because the mean of its divisors is an integer number (62296389).

Almost surely, 2^166123702 is an apocalyptic number.

166123702 is a deficient number, since it is larger than the sum of its proper divisors (83061854).

166123702 is an equidigital number, since it uses as much as digits as its factorization.

166123702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83061853.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 166123702 is about 12888.8984013375. The cubic root of 166123702 is about 549.7229480672.

The spelling of 166123702 in words is "one hundred sixty-six million, one hundred twenty-three thousand, seven hundred two".