142403311 has 8 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 137346720.

The previous prime is 142403299. The next prime is 142403329. The reversal of 142403311 is 113304241.

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 142403311 - 2¹¹ = 142401263 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 (142403381) 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, 33705 + ... + 37693.

It is an arithmetic number, because the mean of its divisors is an integer number (18433800).

Almost surely, 2^142403311 is an apocalyptic number.

142403311 is a deficient number, since it is larger than the sum of its proper divisors (5067089).

142403311 is a wasteful number, since it uses less digits than its factorization.

142403311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 142403311 is about 11933.2858425498. The cubic root of 142403311 is about 522.2038015047.

Adding to 142403311 its reverse (113304241), we get a palindrome (255707552).

The spelling of 142403311 in words is "one hundred forty-two million, four hundred three thousand, three hundred eleven".