142221130 has 16 divisors (see below), whose sum is σ = 258534504. Its totient is φ = 56324800.

The previous prime is 142221097. The next prime is 142221139. The reversal of 142221130 is 31122241.

142221130 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 135001161 + 7219969 = 11619^2 + 2687^2 .

It is not an unprimeable number, because it can be changed into a prime (142221139) 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, 69397 + ... + 71416.

Almost surely, 2^142221130 is an apocalyptic number.

142221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142221130 is a deficient number, since it is larger than the sum of its proper divisors (116313374).

142221130 is a wasteful number, since it uses less digits than its factorization.

142221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140921.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 142221130 is about 11925.6500871022. The cubic root of 142221130 is about 521.9810159320.

Adding to 142221130 its reverse (31122241), we get a palindrome (173343371).

It can be divided in two parts, 1422211 and 30, that added together give a palindrome (1422241).

The spelling of 142221130 in words is "one hundred forty-two million, two hundred twenty-one thousand, one hundred thirty".