142421124145 has 8 divisors (see below), whose sum is σ = 180958604904. Its totient is φ = 107234728704.

The previous prime is 142421124137. The next prime is 142421124149. The reversal of 142421124145 is 541421124241.

It can be written as a sum of positive squares in 4 ways, for example, as 35418863601 + 107002260544 = 188199^2 + 327112^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142421124145 - 2³ = 142421124137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142421124149) 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, 837771234 + ... + 837771403.

It is an arithmetic number, because the mean of its divisors is an integer number (22619825613).

Almost surely, 2^142421124145 is an apocalyptic number.

It is an amenable number.

142421124145 is a deficient number, since it is larger than the sum of its proper divisors (38537480759).

142421124145 is a wasteful number, since it uses less digits than its factorization.

142421124145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675542659.

The product of its digits is 10240, while the sum is 31.

Adding to 142421124145 its reverse (541421124241), we get a palindrome (683842248386).

The spelling of 142421124145 in words is "one hundred forty-two billion, four hundred twenty-one million, one hundred twenty-four thousand, one hundred forty-five".