142561621145 has 8 divisors (see below), whose sum is σ = 171425229504. Its totient is φ = 113815107504.

The previous prime is 142561621133. The next prime is 142561621183. The reversal of 142561621145 is 541126165241.

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 142561621145 - 2¹⁰ = 142561620121 is a prime.

It is a super-2 number, since 2×142561621145² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142561621099 and 142561621108.

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 7 ways as a sum of consecutive naturals, for example, 29270999 + ... + 29275868.

It is an arithmetic number, because the mean of its divisors is an integer number (21428153688).

Almost surely, 2^142561621145 is an apocalyptic number.

It is an amenable number.

142561621145 is a deficient number, since it is larger than the sum of its proper divisors (28863608359).

142561621145 is an equidigital number, since it uses as much as digits as its factorization.

142561621145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58547359.

The product of its digits is 57600, while the sum is 38.

Adding to 142561621145 its reverse (541126165241), we get a palindrome (683687786386).

The spelling of 142561621145 in words is "one hundred forty-two billion, five hundred sixty-one million, six hundred twenty-one thousand, one hundred forty-five".