142305043549 has 4 divisors (see below), whose sum is σ = 142306344064. Its totient is φ = 142303743036.

The previous prime is 142305043541. The next prime is 142305043553. The reversal of 142305043549 is 945340503241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 945340503241 = 33049 ⋅28604209.

It is a cyclic number.

It is not a de Polignac number, because 142305043549 - 2³ = 142305043541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142305043541) 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, 469347 + ... + 710560.

It is an arithmetic number, because the mean of its divisors is an integer number (35576586016).

Almost surely, 2^142305043549 is an apocalyptic number.

It is an amenable number.

142305043549 is a deficient number, since it is larger than the sum of its proper divisors (1300515).

142305043549 is a wasteful number, since it uses less digits than its factorization.

142305043549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300514.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 142305043549 in words is "one hundred forty-two billion, three hundred five million, forty-three thousand, five hundred forty-nine".