142198765 has 16 divisors (see below), whose sum is σ = 178449408. Its totient is φ = 108573696.

The previous prime is 142198759. The next prime is 142198789. The reversal of 142198765 is 567891241.

It is a cyclic number.

It is not a de Polignac number, because 142198765 - 2³ = 142198757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 65284 + ... + 67426.

It is an arithmetic number, because the mean of its divisors is an integer number (11153088).

Almost surely, 2^142198765 is an apocalyptic number.

It is an amenable number.

142198765 is a deficient number, since it is larger than the sum of its proper divisors (36250643).

142198765 is a wasteful number, since it uses less digits than its factorization.

142198765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748.

The product of its digits is 120960, while the sum is 43.

The square root of 142198765 is about 11924.7123655038. The cubic root of 142198765 is about 521.9536531029.

The spelling of 142198765 in words is "one hundred forty-two million, one hundred ninety-eight thousand, seven hundred sixty-five".