142421101 has 4 divisors (see below), whose sum is σ = 144427104. Its totient is φ = 140415100.

The previous prime is 142421051. The next prime is 142421113. The reversal of 142421101 is 101124241.

It is a happy number.

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 142421101 - 2¹³ = 142412909 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 (142421401) 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, 1002895 + ... + 1003036.

It is an arithmetic number, because the mean of its divisors is an integer number (36106776).

Almost surely, 2^142421101 is an apocalyptic number.

It is an amenable number.

142421101 is a deficient number, since it is larger than the sum of its proper divisors (2006003).

142421101 is an equidigital number, since it uses as much as digits as its factorization.

142421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006002.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 142421101 is about 11934.0312132992. The cubic root of 142421101 is about 522.2255463615.

Adding to 142421101 its reverse (101124241), we get a palindrome (243545342).

The spelling of 142421101 in words is "one hundred forty-two million, four hundred twenty-one thousand, one hundred one".