142040155405 has 16 divisors (see below), whose sum is σ = 172123795584. Its totient is φ = 112515318720.

The previous prime is 142040155391. The next prime is 142040155409. The reversal of 142040155405 is 504551040241.

It is a happy number.

It is not a de Polignac number, because 142040155405 - 2⁷ = 142040155277 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 (142040155409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7994742 + ... + 8012488.

It is an arithmetic number, because the mean of its divisors is an integer number (10757737224).

Almost surely, 2^142040155405 is an apocalyptic number.

It is an amenable number.

142040155405 is a deficient number, since it is larger than the sum of its proper divisors (30083640179).

142040155405 is a wasteful number, since it uses less digits than its factorization.

142040155405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33396.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 142040155405 its reverse (504551040241), we get a palindrome (646591195646).

The spelling of 142040155405 in words is "one hundred forty-two billion, forty million, one hundred fifty-five thousand, four hundred five".