142491548824909 has 4 divisors (see below), whose sum is σ = 149991104026240. Its totient is φ = 134991993623580.

The previous prime is 142491548824883. The next prime is 142491548824913. The reversal of 142491548824909 is 909428845194241.

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 142491548824909 - 2¹³ = 142491548816717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142491548824309) 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, 3749777600637 + ... + 3749777600674.

It is an arithmetic number, because the mean of its divisors is an integer number (37497776006560).

Almost surely, 2^{142491548824909} is an apocalyptic number.

142491548824909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142491548824909 is a deficient number, since it is larger than the sum of its proper divisors (7499555201331).

142491548824909 is an equidigital number, since it uses as much as digits as its factorization.

142491548824909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499555201330.

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 142491548824909 in words is "one hundred forty-two trillion, four hundred ninety-one billion, five hundred forty-eight million, eight hundred twenty-four thousand, nine hundred nine".