142454121349 has 24 divisors (see below), whose sum is σ = 159847871040. Its totient is φ = 126440170752.

The previous prime is 142454121343. The next prime is 142454121361. The reversal of 142454121349 is 943121454241.

It is a happy number.

It is not a de Polignac number, because 142454121349 - 2⁷ = 142454121221 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 (142454121343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498912 + ... + 730630.

It is an arithmetic number, because the mean of its divisors is an integer number (6660327960).

Almost surely, 2^142454121349 is an apocalyptic number.

It is an amenable number.

142454121349 is a deficient number, since it is larger than the sum of its proper divisors (17393749691).

142454121349 is a wasteful number, since it uses less digits than its factorization.

142454121349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231837 (or 231808 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The spelling of 142454121349 in words is "one hundred forty-two billion, four hundred fifty-four million, one hundred twenty-one thousand, three hundred forty-nine".