142019395 has 24 divisors (see below), whose sum is σ = 208688400. Its totient is φ = 92256192.

The previous prime is 142019393. The next prime is 142019399. The reversal of 142019395 is 593910241.

It is not a de Polignac number, because 142019395 - 2¹ = 142019393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142019395.

It is not an unprimeable number, because it can be changed into a prime (142019393) 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 23 ways as a sum of consecutive naturals, for example, 10600 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (8695350).

Almost surely, 2^142019395 is an apocalyptic number.

142019395 is a deficient number, since it is larger than the sum of its proper divisors (66669005).

142019395 is a wasteful number, since it uses less digits than its factorization.

142019395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30547 (or 30540 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 142019395 is about 11917.1890561491. The cubic root of 142019395 is about 521.7340960630.

The spelling of 142019395 in words is "one hundred forty-two million, nineteen thousand, three hundred ninety-five".