142240591491 has 8 divisors (see below), whose sum is σ = 190018143504. Its totient is φ = 94645050240.

The previous prime is 142240591457. The next prime is 142240591529. The reversal of 142240591491 is 194195042241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142240591491 - 2¹⁰ = 142240590467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142240591291) 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 7 ways as a sum of consecutive naturals, for example, 45500866 + ... + 45503991.

It is an arithmetic number, because the mean of its divisors is an integer number (23752267938).

Almost surely, 2^142240591491 is an apocalyptic number.

142240591491 is a deficient number, since it is larger than the sum of its proper divisors (47777552013).

142240591491 is an equidigital number, since it uses as much as digits as its factorization.

142240591491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91005381.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 142240591491 in words is "one hundred forty-two billion, two hundred forty million, five hundred ninety-one thousand, four hundred ninety-one".