142510421 has 8 divisors (see below), whose sum is σ = 146512800. Its totient is φ = 138516048.

The previous prime is 142510409. The next prime is 142510427. The reversal of 142510421 is 124015241.

It is a happy number.

142510421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142510421 - 2²² = 138316117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142510393 and 142510402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142510427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61730 + ... + 63996.

It is an arithmetic number, because the mean of its divisors is an integer number (18314100).

Almost surely, 2^142510421 is an apocalyptic number.

It is an amenable number.

142510421 is a deficient number, since it is larger than the sum of its proper divisors (4002379).

142510421 is a wasteful number, since it uses less digits than its factorization.

142510421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 142510421 is about 11937.7728659914. The cubic root of 142510421 is about 522.3346955386.

Adding to 142510421 its reverse (124015241), we get a palindrome (266525662).

The spelling of 142510421 in words is "one hundred forty-two million, five hundred ten thousand, four hundred twenty-one".