142240221861 has 8 divisors (see below), whose sum is σ = 190409222304. Its totient is φ = 94449018000.

The previous prime is 142240221857. The next prime is 142240221883. The reversal of 142240221861 is 168122042241.

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

It is not a de Polignac number, because 142240221861 - 2² = 142240221857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142240221811) 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 7 ways as a sum of consecutive naturals, for example, 94448266 + ... + 94449771.

It is an arithmetic number, because the mean of its divisors is an integer number (23801152788).

Almost surely, 2^142240221861 is an apocalyptic number.

It is an amenable number.

142240221861 is a deficient number, since it is larger than the sum of its proper divisors (48169000443).

142240221861 is a wasteful number, since it uses less digits than its factorization.

142240221861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188898291.

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 142240221861 in words is "one hundred forty-two billion, two hundred forty million, two hundred twenty-one thousand, eight hundred sixty-one".