142190231 has 2 divisors, whose sum is σ = 142190232. Its totient is φ = 142190230.

The previous prime is 142190183. The next prime is 142190239. The reversal of 142190231 is 132091241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142190231 - 2¹⁴ = 142173847 is a prime.

It is a super-2 number, since 2×142190231² = 40436123583666722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142190197 and 142190206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142190239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71095115 + 71095116.

It is an arithmetic number, because the mean of its divisors is an integer number (71095116).

Almost surely, 2^142190231 is an apocalyptic number.

142190231 is a deficient number, since it is larger than the sum of its proper divisors (1).

142190231 is an equidigital number, since it uses as much as digits as its factorization.

142190231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 142190231 is about 11924.3545317975. The cubic root of 142190231 is about 521.9432112832.

The spelling of 142190231 in words is "one hundred forty-two million, one hundred ninety thousand, two hundred thirty-one".