142140413 has 4 divisors (see below), whose sum is σ = 145446048. Its totient is φ = 138834780.

The previous prime is 142140409. The next prime is 142140419. The reversal of 142140413 is 314041241.

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: 314041241 = 23 ⋅13653967.

It is a cyclic number.

It is not a de Polignac number, because 142140413 - 2² = 142140409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142140419) 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, 1652753 + ... + 1652838.

It is an arithmetic number, because the mean of its divisors is an integer number (36361512).

Almost surely, 2^142140413 is an apocalyptic number.

It is an amenable number.

142140413 is a deficient number, since it is larger than the sum of its proper divisors (3305635).

142140413 is an equidigital number, since it uses as much as digits as its factorization.

142140413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305634.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 142140413 is about 11922.2654306973. The cubic root of 142140413 is about 521.8822478729.

Adding to 142140413 its reverse (314041241), we get a palindrome (456181654).

The spelling of 142140413 in words is "one hundred forty-two million, one hundred forty thousand, four hundred thirteen".