142166505601 has 4 divisors (see below), whose sum is σ = 142313524672. Its totient is φ = 142019486532.

The previous prime is 142166505527. The next prime is 142166505619. The reversal of 142166505601 is 106505661241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142166505601 - 2¹⁹ = 142165981313 is a prime.

It is a super-2 number, since 2×142166505601² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142166505101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73508085 + ... + 73510018.

It is an arithmetic number, because the mean of its divisors is an integer number (35578381168).

Almost surely, 2^142166505601 is an apocalyptic number.

It is an amenable number.

142166505601 is a deficient number, since it is larger than the sum of its proper divisors (147019071).

142166505601 is an equidigital number, since it uses as much as digits as its factorization.

142166505601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147019070.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 142166505601 in words is "one hundred forty-two billion, one hundred sixty-six million, five hundred five thousand, six hundred one".