166742074 has 8 divisors (see below), whose sum is σ = 253539540. Its totient is φ = 82228896.

The previous prime is 166742057. The next prime is 166742077. The reversal of 166742074 is 470247661.

It can be written as a sum of positive squares in 2 ways, for example, as 149891049 + 16851025 = 12243^2 + 4105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (166742077) 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, 570889 + ... + 571180.

Almost surely, 2^166742074 is an apocalyptic number.

166742074 is a deficient number, since it is larger than the sum of its proper divisors (86797466).

166742074 is a wasteful number, since it uses less digits than its factorization.

166742074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142144.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 166742074 is about 12912.8646705524. The cubic root of 166742074 is about 550.4041921447.

The spelling of 166742074 in words is "one hundred sixty-six million, seven hundred forty-two thousand, seventy-four".