142440505135 has 16 divisors (see below), whose sum is σ = 171131919840. Its totient is φ = 113816949120.

The previous prime is 142440505121. The next prime is 142440505139. The reversal of 142440505135 is 531505044241.

It is not a de Polignac number, because 142440505135 - 2⁷ = 142440505007 is a prime.

It is a super-2 number, since 2×142440505135² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142440505135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142440505139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22864201 + ... + 22870429.

It is an arithmetic number, because the mean of its divisors is an integer number (10695744990).

Almost surely, 2^142440505135 is an apocalyptic number.

142440505135 is a deficient number, since it is larger than the sum of its proper divisors (28691414705).

142440505135 is a wasteful number, since it uses less digits than its factorization.

142440505135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10938.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 142440505135 its reverse (531505044241), we get a palindrome (673945549376).

The spelling of 142440505135 in words is "one hundred forty-two billion, four hundred forty million, five hundred five thousand, one hundred thirty-five".