142210421 has 8 divisors (see below), whose sum is σ = 149822400. Its totient is φ = 134611200.

The previous prime is 142210399. The next prime is 142210429. The reversal of 142210421 is 124012241.

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

It is not a de Polignac number, because 142210421 - 2¹⁴ = 142194037 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 142210421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142210429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27221 + ... + 32021.

It is an arithmetic number, because the mean of its divisors is an integer number (18727800).

Almost surely, 2^142210421 is an apocalyptic number.

It is an amenable number.

142210421 is a deficient number, since it is larger than the sum of its proper divisors (7611979).

142210421 is a wasteful number, since it uses less digits than its factorization.

142210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142210421 is about 11925.2010884513. The cubic root of 142210421 is about 521.9679141868.

Adding to 142210421 its reverse (124012241), we get a palindrome (266222662).

The spelling of 142210421 in words is "one hundred forty-two million, two hundred ten thousand, four hundred twenty-one".