142219706 has 12 divisors (see below), whose sum is σ = 215007822. Its totient is φ = 70551936.

The previous prime is 142219699. The next prime is 142219709. The reversal of 142219706 is 607912241.

It is a happy number.

142219706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 86583025 + 55636681 = 9305^2 + 7459^2 .

It is not an unprimeable number, because it can be changed into a prime (142219709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210986 + ... + 211658.

Almost surely, 2^142219706 is an apocalyptic number.

142219706 is a deficient number, since it is larger than the sum of its proper divisors (72788116).

142219706 is an frugal number, since it uses more digits than its factorization.

142219706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 142219706 is about 11925.5903837085. The cubic root of 142219706 is about 521.9792738011.

The spelling of 142219706 in words is "one hundred forty-two million, two hundred nineteen thousand, seven hundred six".