142664311 has 8 divisors (see below), whose sum is σ = 147732480. Its totient is φ = 137606112.

The previous prime is 142664309. The next prime is 142664321. The reversal of 142664311 is 113466241.

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 142664311 - 2¹ = 142664309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142664311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142664321) 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, 38026 + ... + 41608.

It is an arithmetic number, because the mean of its divisors is an integer number (18466560).

Almost surely, 2^142664311 is an apocalyptic number.

142664311 is a deficient number, since it is larger than the sum of its proper divisors (5068169).

142664311 is a wasteful number, since it uses less digits than its factorization.

142664311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985.

The product of its digits is 3456, while the sum is 28.

The square root of 142664311 is about 11944.2166340033. The cubic root of 142664311 is about 522.5226424259.

The spelling of 142664311 in words is "one hundred forty-two million, six hundred sixty-four thousand, three hundred eleven".