142245431513 has 4 divisors (see below), whose sum is σ = 145553464848. Its totient is φ = 138937398180.

The previous prime is 142245431467. The next prime is 142245431519. The reversal of 142245431513 is 315134542241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315134542241 = 19 ⋅16586028539.

It is a cyclic number.

It is not a de Polignac number, because 142245431513 - 2³² = 137950464217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142245431519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654016603 + ... + 1654016688.

It is an arithmetic number, because the mean of its divisors is an integer number (36388366212).

Almost surely, 2^142245431513 is an apocalyptic number.

It is an amenable number.

142245431513 is a deficient number, since it is larger than the sum of its proper divisors (3308033335).

142245431513 is an equidigital number, since it uses as much as digits as its factorization.

142245431513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308033334.

The product of its digits is 57600, while the sum is 35.

Adding to 142245431513 its reverse (315134542241), we get a palindrome (457379973754).

The spelling of 142245431513 in words is "one hundred forty-two billion, two hundred forty-five million, four hundred thirty-one thousand, five hundred thirteen".