142412421 has 4 divisors (see below), whose sum is σ = 189883232. Its totient is φ = 94941612.

The previous prime is 142412407. The next prime is 142412437. The reversal of 142412421 is 124214241.

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 not a de Polignac number, because 142412421 - 2⁹ = 142411909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142412441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23735401 + ... + 23735406.

It is an arithmetic number, because the mean of its divisors is an integer number (47470808).

Almost surely, 2^142412421 is an apocalyptic number.

It is an amenable number.

142412421 is a deficient number, since it is larger than the sum of its proper divisors (47470811).

142412421 is an equidigital number, since it uses as much as digits as its factorization.

142412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47470810.

The product of its digits is 512, while the sum is 21.

The square root of 142412421 is about 11933.6675418750. The cubic root of 142412421 is about 522.2149369555.

Adding to 142412421 its reverse (124214241), we get a palindrome (266626662).

The spelling of 142412421 in words is "one hundred forty-two million, four hundred twelve thousand, four hundred twenty-one".