142401111 has 4 divisors (see below), whose sum is σ = 189868152. Its totient is φ = 94934072.

The previous prime is 142401109. The next prime is 142401137. The reversal of 142401111 is 111104241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142401111 - 2¹ = 142401109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142401101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23733516 + ... + 23733521.

It is an arithmetic number, because the mean of its divisors is an integer number (47467038).

Almost surely, 2^142401111 is an apocalyptic number.

142401111 is a deficient number, since it is larger than the sum of its proper divisors (47467041).

142401111 is an equidigital number, since it uses as much as digits as its factorization.

142401111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47467040.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 142401111 is about 11933.1936630560. The cubic root of 142401111 is about 522.2011123016.

Adding to 142401111 its reverse (111104241), we get a palindrome (253505352).

It can be divided in two parts, 14240 and 1111, that added together give a palindrome (15351).

The spelling of 142401111 in words is "one hundred forty-two million, four hundred one thousand, one hundred eleven".