142191230 has 32 divisors (see below), whose sum is σ = 273567456. Its totient is φ = 53023744.

The previous prime is 142191229. The next prime is 142191277. The reversal of 142191230 is 32191241.

It is a junction number, because it is equal to n+sod(n) for n = 142191196 and 142191205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14282 + ... + 22098.

It is an arithmetic number, because the mean of its divisors is an integer number (8548983).

Almost surely, 2^142191230 is an apocalyptic number.

142191230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142191230 is a deficient number, since it is larger than the sum of its proper divisors (131376226).

142191230 is a wasteful number, since it uses less digits than its factorization.

142191230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7948.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 142191230 is about 11924.3964207837. The cubic root of 142191230 is about 521.9444336364.

The spelling of 142191230 in words is "one hundred forty-two million, one hundred ninety-one thousand, two hundred thirty".