142197612481 has 4 divisors (see below), whose sum is σ = 142199637952. Its totient is φ = 142195587012.

The previous prime is 142197612433. The next prime is 142197612547. The reversal of 142197612481 is 184216791241.

142197612481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 142197612481 - 2¹⁷ = 142197481409 is a prime.

It is a super-2 number, since 2×142197612481² (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 (142197642481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903501 + ... + 1049146.

It is an arithmetic number, because the mean of its divisors is an integer number (35549909488).

Almost surely, 2^142197612481 is an apocalyptic number.

It is an amenable number.

142197612481 is a deficient number, since it is larger than the sum of its proper divisors (2025471).

142197612481 is an equidigital number, since it uses as much as digits as its factorization.

142197612481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025470.

The product of its digits is 193536, while the sum is 46.

The spelling of 142197612481 in words is "one hundred forty-two billion, one hundred ninety-seven million, six hundred twelve thousand, four hundred eighty-one".