142641506541 has 4 divisors (see below), whose sum is σ = 190188675392. Its totient is φ = 95094337692.

The previous prime is 142641506507. The next prime is 142641506543. The reversal of 142641506541 is 145605146241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145605146241 = 3 ⋅48535048747.

It is not a de Polignac number, because 142641506541 - 2¹⁵ = 142641473773 is a prime.

It is a super-2 number, since 2×142641506541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142641506541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142641506543) 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 3 ways as a sum of consecutive naturals, for example, 23773584421 + ... + 23773584426.

It is an arithmetic number, because the mean of its divisors is an integer number (47547168848).

Almost surely, 2^142641506541 is an apocalyptic number.

It is an amenable number.

142641506541 is a deficient number, since it is larger than the sum of its proper divisors (47547168851).

142641506541 is an equidigital number, since it uses as much as digits as its factorization.

142641506541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47547168850.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 142641506541 in words is "one hundred forty-two billion, six hundred forty-one million, five hundred six thousand, five hundred forty-one".