142408587 has 16 divisors (see below), whose sum is σ = 193851680. Its totient is φ = 92966400.

The previous prime is 142408559. The next prime is 142408601. The reversal of 142408587 is 785804241.

It is a happy number.

It is not a de Polignac number, because 142408587 - 2¹⁰ = 142407563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142408537) 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 15 ways as a sum of consecutive naturals, for example, 42489 + ... + 45717.

It is an arithmetic number, because the mean of its divisors is an integer number (12115730).

Almost surely, 2^142408587 is an apocalyptic number.

142408587 is a deficient number, since it is larger than the sum of its proper divisors (51443093).

142408587 is a wasteful number, since it uses less digits than its factorization.

142408587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 142408587 is about 11933.5069028346. The cubic root of 142408587 is about 522.2102505899.

The spelling of 142408587 in words is "one hundred forty-two million, four hundred eight thousand, five hundred eighty-seven".