142664305 has 8 divisors (see below), whose sum is σ = 195653952. Its totient is φ = 97826928.

The previous prime is 142664303. The next prime is 142664309. The reversal of 142664305 is 503466241.

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 142664305 - 2¹ = 142664303 is a prime.

It is a super-2 number, since 2×142664305² = 40706207842266050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142664303) 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, 2038027 + ... + 2038096.

It is an arithmetic number, because the mean of its divisors is an integer number (24456744).

Almost surely, 2^142664305 is an apocalyptic number.

It is an amenable number.

142664305 is a deficient number, since it is larger than the sum of its proper divisors (52989647).

142664305 is an equidigital number, since it uses as much as digits as its factorization.

142664305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076135.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 142664305 is about 11944.2163828357. The cubic root of 142664305 is about 522.5226351007.

The spelling of 142664305 in words is "one hundred forty-two million, six hundred sixty-four thousand, three hundred five".