142005899093 has 4 divisors (see below), whose sum is σ = 142008302988. Its totient is φ = 142003495200.

The previous prime is 142005899071. The next prime is 142005899131. The reversal of 142005899093 is 390998500241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 390998500241 = 75217 ⋅5198273.

It can be written as a sum of positive squares in 2 ways, for example, as 127929974929 + 14075924164 = 357673^2 + 118642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142005899093 is a prime.

It is a super-2 number, since 2×142005899093² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142005899003) 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, 1111046 + ... + 1232247.

It is an arithmetic number, because the mean of its divisors is an integer number (35502075747).

Almost surely, 2^142005899093 is an apocalyptic number.

It is an amenable number.

142005899093 is a deficient number, since it is larger than the sum of its proper divisors (2403895).

142005899093 is an equidigital number, since it uses as much as digits as its factorization.

142005899093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403894.

The product of its (nonzero) digits is 699840, while the sum is 50.

It can be divided in two parts, 1420058 and 99093, that added together give a palindrome (1519151).

The spelling of 142005899093 in words is "one hundred forty-two billion, five million, eight hundred ninety-nine thousand, ninety-three".