142001268591 has 32 divisors (see below), whose sum is σ = 233887725568. Its totient is φ = 74625338880.

The previous prime is 142001268571. The next prime is 142001268593. The reversal of 142001268591 is 195862100241.

It is not a de Polignac number, because 142001268591 - 2⁶ = 142001268527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001268593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 885706 + ... + 1033671.

It is an arithmetic number, because the mean of its divisors is an integer number (7308991424).

Almost surely, 2^142001268591 is an apocalyptic number.

142001268591 is a deficient number, since it is larger than the sum of its proper divisors (91886456977).

142001268591 is a wasteful number, since it uses less digits than its factorization.

142001268591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919671.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 142001268591 in words is "one hundred forty-two billion, one million, two hundred sixty-eight thousand, five hundred ninety-one".