142023413521 has 4 divisors (see below), whose sum is σ = 154934632944. Its totient is φ = 129112194100.

The previous prime is 142023413513. The next prime is 142023413527. The reversal of 142023413521 is 125314320241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142023413521 - 2³ = 142023413513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142023413521.

It is not an unprimeable number, because it can be changed into a prime (142023413527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455609695 + ... + 6455609716.

It is an arithmetic number, because the mean of its divisors is an integer number (38733658236).

Almost surely, 2^142023413521 is an apocalyptic number.

142023413521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142023413521 is a deficient number, since it is larger than the sum of its proper divisors (12911219423).

142023413521 is a wasteful number, since it uses less digits than its factorization.

142023413521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911219422.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 142023413521 its reverse (125314320241), we get a palindrome (267337733762).

The spelling of 142023413521 in words is "one hundred forty-two billion, twenty-three million, four hundred thirteen thousand, five hundred twenty-one".