142540319 has 6 divisors (see below), whose sum is σ = 143210184. Its totient is φ = 141872120.

The previous prime is 142540301. The next prime is 142540327. The reversal of 142540319 is 913045241.

It is a de Polignac number, because none of the positive numbers 2^k-142540319 is a prime.

It is a super-2 number, since 2×142540319² = 40635485081243522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142540291 and 142540300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142540339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210209 + ... + 210885.

It is an arithmetic number, because the mean of its divisors is an integer number (23868364).

Almost surely, 2^142540319 is an apocalyptic number.

142540319 is a deficient number, since it is larger than the sum of its proper divisors (669865).

142540319 is an frugal number, since it uses more digits than its factorization.

142540319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 142540319 is about 11939.0250439473. The cubic root of 142540319 is about 522.3712207524.

The spelling of 142540319 in words is "one hundred forty-two million, five hundred forty thousand, three hundred nineteen".