141666506 has 4 divisors (see below), whose sum is σ = 212499762. Its totient is φ = 70833252.

The previous prime is 141666487. The next prime is 141666517. The reversal of 141666506 is 605666141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605666141 = 2293 ⋅264137.

It can be written as a sum of positive squares in only one way, i.e., 123099025 + 18567481 = 11095^2 + 4309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35416625 + ... + 35416628.

Almost surely, 2^141666506 is an apocalyptic number.

141666506 is a deficient number, since it is larger than the sum of its proper divisors (70833256).

141666506 is an equidigital number, since it uses as much as digits as its factorization.

141666506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70833255.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 141666506 is about 11902.3739648862. The cubic root of 141666506 is about 521.3016036568.

The spelling of 141666506 in words is "one hundred forty-one million, six hundred sixty-six thousand, five hundred six".