142839545381 has 4 divisors (see below), whose sum is σ = 153827202732. Its totient is φ = 131851888032.

The previous prime is 142839545363. The next prime is 142839545411. The reversal of 142839545381 is 183545938241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98304196225 + 44535349156 = 313535^2 + 211034^2 .

It is a cyclic number.

It is not a de Polignac number, because 142839545381 - 2²⁶ = 142772436517 is a prime.

It is a super-2 number, since 2×142839545381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142839545311) 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, 5493828656 + ... + 5493828681.

It is an arithmetic number, because the mean of its divisors is an integer number (38456800683).

Almost surely, 2^142839545381 is an apocalyptic number.

It is an amenable number.

142839545381 is a deficient number, since it is larger than the sum of its proper divisors (10987657351).

142839545381 is a wasteful number, since it uses less digits than its factorization.

142839545381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987657350.

The product of its digits is 4147200, while the sum is 53.

The spelling of 142839545381 in words is "one hundred forty-two billion, eight hundred thirty-nine million, five hundred forty-five thousand, three hundred eighty-one".