142423504212661 has 12 divisors (see below), whose sum is σ = 165681884586060. Its totient is φ = 122073190008000.

The previous prime is 142423504212659. The next prime is 142423504212701. The reversal of 142423504212661 is 166212405324241.

It can be written as a sum of positive squares in 2 ways, for example, as 25475176722436 + 116948327490225 = 5047294^2 + 10814265^2 .

It is not a de Polignac number, because 142423504212661 - 2¹ = 142423504212659 is a prime.

It is a super-2 number, since 2×142423504212661² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142423504212761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47326840 + ... + 50246161.

It is an arithmetic number, because the mean of its divisors is an integer number (13806823715505).

Almost surely, 2^{142423504212661} is an apocalyptic number.

It is an amenable number.

142423504212661 is a deficient number, since it is larger than the sum of its proper divisors (23258380373399).

142423504212661 is an equidigital number, since it uses as much as digits as its factorization.

142423504212661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97602804 (or 97602797 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 142423504212661 in words is "one hundred forty-two trillion, four hundred twenty-three billion, five hundred four million, two hundred twelve thousand, six hundred sixty-one".