142540427 has 8 divisors (see below), whose sum is σ = 151134336. Its totient is φ = 133969792.

The previous prime is 142540379. The next prime is 142540439. The reversal of 142540427 is 724045241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142540427 - 2²⁰ = 141491851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142540427.

It is not an unprimeable number, because it can be changed into a prime (142540127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7718 + ... + 18564.

It is an arithmetic number, because the mean of its divisors is an integer number (18891792).

Almost surely, 2^142540427 is an apocalyptic number.

142540427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142540427 is a deficient number, since it is larger than the sum of its proper divisors (8593909).

142540427 is a wasteful number, since it uses less digits than its factorization.

142540427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11637.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 142540427 is about 11939.0295669288. The cubic root of 142540427 is about 522.3713526825.

Adding to 142540427 its reverse (724045241), we get a palindrome (866585668).

The spelling of 142540427 in words is "one hundred forty-two million, five hundred forty thousand, four hundred twenty-seven".