166416542 has 4 divisors (see below), whose sum is σ = 249624816. Its totient is φ = 83208270.

The previous prime is 166416541. The next prime is 166416583. The reversal of 166416542 is 245614661.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166416541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41604134 + ... + 41604137.

It is an arithmetic number, because the mean of its divisors is an integer number (62406204).

Almost surely, 2^166416542 is an apocalyptic number.

166416542 is a deficient number, since it is larger than the sum of its proper divisors (83208274).

166416542 is an equidigital number, since it uses as much as digits as its factorization.

166416542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83208273.

The product of its digits is 34560, while the sum is 35.

The square root of 166416542 is about 12900.2535633994. The cubic root of 166416542 is about 550.0457724991.

The spelling of 166416542 in words is "one hundred sixty-six million, four hundred sixteen thousand, five hundred forty-two".