142144613 has 4 divisors (see below), whose sum is σ = 153078828. Its totient is φ = 131210400.

The previous prime is 142144609. The next prime is 142144657. The reversal of 142144613 is 316441241.

It is a happy number.

142144613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42484324 + 99660289 = 6518^2 + 9983^2 .

It is a cyclic number.

It is not a de Polignac number, because 142144613 - 2² = 142144609 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 (142144603) 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, 5467088 + ... + 5467113.

It is an arithmetic number, because the mean of its divisors is an integer number (38269707).

Almost surely, 2^142144613 is an apocalyptic number.

142144613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142144613 is a deficient number, since it is larger than the sum of its proper divisors (10934215).

142144613 is a wasteful number, since it uses less digits than its factorization.

142144613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10934214.

The product of its digits is 2304, while the sum is 26.

The square root of 142144613 is about 11922.4415704167. The cubic root of 142144613 is about 521.8873880574.

Adding to 142144613 its reverse (316441241), we get a palindrome (458585854).

The spelling of 142144613 in words is "one hundred forty-two million, one hundred forty-four thousand, six hundred thirteen".