142094720281801 has 81 divisors (see below), whose sum is σ = 177407708579829. Its totient is φ = 113455783800576.

The previous prime is 142094720281793. The next prime is 142094720281849. The reversal of 142094720281801 is 108182027490241.

The square root of 142094720281801 is 11920349.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 32412583172025 + 109682137109776 = 5693205^2 + 10472924^2 .

It is not a de Polignac number, because 142094720281801 - 2³ = 142094720281793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (142094720281201) 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 80 ways as a sum of consecutive naturals, for example, 154618846420 + ... + 154618847338.

Almost surely, 2^{142094720281801} is an apocalyptic number.

142094720281801 is the 11920349-th square number.

142094720281801 is the 5960175-th centered octagonal number.

It is an amenable number.

142094720281801 is a deficient number, since it is larger than the sum of its proper divisors (35312988298028).

142094720281801 is an frugal number, since it uses more digits than its factorization.

142094720281801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

142094720281801 divided by its sum of digits (49) gives a square (2899892250649 = 1702907²).

The spelling of 142094720281801 in words is "one hundred forty-two trillion, ninety-four billion, seven hundred twenty million, two hundred eighty-one thousand, eight hundred one".