142661311 has 8 divisors (see below), whose sum is σ = 153728064. Its totient is φ = 131607840.

The previous prime is 142661303. The next prime is 142661317. The reversal of 142661311 is 113166241.

142661311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142661311 - 2³ = 142661303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142661317) 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, 40170 + ... + 43576.

It is an arithmetic number, because the mean of its divisors is an integer number (19216008).

Almost surely, 2^142661311 is an apocalyptic number.

142661311 is a deficient number, since it is larger than the sum of its proper divisors (11066753).

142661311 is a wasteful number, since it uses less digits than its factorization.

142661311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641.

The product of its digits is 864, while the sum is 25.

The square root of 142661311 is about 11944.0910495525. The cubic root of 142661311 is about 522.5189797979.

The spelling of 142661311 in words is "one hundred forty-two million, six hundred sixty-one thousand, three hundred eleven".