142454124021 has 32 divisors (see below), whose sum is σ = 209348979840. Its totient is φ = 85444761600.

The previous prime is 142454124019. The next prime is 142454124031. The reversal of 142454124021 is 120421454241.

It is not a de Polignac number, because 142454124021 - 2¹ = 142454124019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142454124021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142454124011) 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, 3146481 + ... + 3191433.

It is an arithmetic number, because the mean of its divisors is an integer number (6542155620).

Almost surely, 2^142454124021 is an apocalyptic number.

142454124021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142454124021 is a deficient number, since it is larger than the sum of its proper divisors (66894855819).

142454124021 is a wasteful number, since it uses less digits than its factorization.

142454124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45957.

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 142454124021 its reverse (120421454241), we get a palindrome (262875578262).

The spelling of 142454124021 in words is "one hundred forty-two billion, four hundred fifty-four million, one hundred twenty-four thousand, twenty-one".