142211530 has 16 divisors (see below), whose sum is σ = 267110784. Its totient is φ = 54411280.

The previous prime is 142211527. The next prime is 142211543. The reversal of 142211530 is 35112241.

142211530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142211498 and 142211507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308926 + ... + 309385.

It is an arithmetic number, because the mean of its divisors is an integer number (16694424).

Almost surely, 2^142211530 is an apocalyptic number.

142211530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142211530 is a deficient number, since it is larger than the sum of its proper divisors (124899254).

142211530 is a wasteful number, since it uses less digits than its factorization.

142211530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618341.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 142211530 is about 11925.2475865283. The cubic root of 142211530 is about 521.9692710047.

Adding to 142211530 its reverse (35112241), we get a palindrome (177323771).

It can be divided in two parts, 14221 and 1530, that added together give a palindrome (15751).

The spelling of 142211530 in words is "one hundred forty-two million, two hundred eleven thousand, five hundred thirty".