167742145 has 8 divisors (see below), whose sum is σ = 213131304. Its totient is φ = 126299904.

The previous prime is 167742143. The next prime is 167742167. The reversal of 167742145 is 541247761.

It can be written as a sum of positive squares in 4 ways, for example, as 69355584 + 98386561 = 8328^2 + 9919^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 167742145 - 2¹ = 167742143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167742143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986634 + ... + 986803.

It is an arithmetic number, because the mean of its divisors is an integer number (26641413).

Almost surely, 2^167742145 is an apocalyptic number.

It is an amenable number.

167742145 is a deficient number, since it is larger than the sum of its proper divisors (45389159).

167742145 is a wasteful number, since it uses less digits than its factorization.

167742145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973459.

The product of its digits is 47040, while the sum is 37.

The square root of 167742145 is about 12951.5306045270. The cubic root of 167742145 is about 551.5023881850.

The spelling of 167742145 in words is "one hundred sixty-seven million, seven hundred forty-two thousand, one hundred forty-five".