142193311 has 8 divisors (see below), whose sum is σ = 158071424. Its totient is φ = 127020960.

The previous prime is 142193309. The next prime is 142193339. The reversal of 142193311 is 113391241.

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 142193311 - 2¹ = 142193309 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 (142193341) 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, 176016 + ... + 176821.

It is an arithmetic number, because the mean of its divisors is an integer number (19758928).

Almost surely, 2^142193311 is an apocalyptic number.

142193311 is a deficient number, since it is larger than the sum of its proper divisors (15878113).

142193311 is a wasteful number, since it uses less digits than its factorization.

142193311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352881.

The product of its digits is 648, while the sum is 25.

The square root of 142193311 is about 11924.4836785498. The cubic root of 142193311 is about 521.9469798813.

The spelling of 142193311 in words is "one hundred forty-two million, one hundred ninety-three thousand, three hundred eleven".