142341221 has 8 divisors (see below), whose sum is σ = 164415744. Its totient is φ = 121789120.

The previous prime is 142341209. The next prime is 142341229. The reversal of 142341221 is 122143241.

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 142341221 - 2¹⁰ = 142340197 is a prime.

It is a super-2 number, since 2×142341221² = 40522046391541682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142341193 and 142341202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142341229) 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, 380405 + ... + 380778.

It is an arithmetic number, because the mean of its divisors is an integer number (20551968).

Almost surely, 2^142341221 is an apocalyptic number.

142341221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142341221 is a deficient number, since it is larger than the sum of its proper divisors (22074523).

142341221 is a wasteful number, since it uses less digits than its factorization.

142341221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761211.

The product of its digits is 384, while the sum is 20.

The square root of 142341221 is about 11930.6840122434. The cubic root of 142341221 is about 522.1278942164.

Adding to 142341221 its reverse (122143241), we get a palindrome (264484462).

The spelling of 142341221 in words is "one hundred forty-two million, three hundred forty-one thousand, two hundred twenty-one".