142839501 has 16 divisors (see below), whose sum is σ = 218370048. Its totient is φ = 81356400.

The previous prime is 142839481. The next prime is 142839509. The reversal of 142839501 is 105938241.

It is not a de Polignac number, because 142839501 - 2⁷ = 142839373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142839509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4405 + ... + 17466.

It is an arithmetic number, because the mean of its divisors is an integer number (13648128).

Almost surely, 2^142839501 is an apocalyptic number.

It is an amenable number.

142839501 is a deficient number, since it is larger than the sum of its proper divisors (75530547).

142839501 is a wasteful number, since it uses less digits than its factorization.

142839501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22192.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 142839501 is about 11951.5480587244. The cubic root of 142839501 is about 522.7364387060.

The spelling of 142839501 in words is "one hundred forty-two million, eight hundred thirty-nine thousand, five hundred one".