142990206238 has 32 divisors (see below), whose sum is σ = 241585920000. Its totient is φ = 62884836000.

The previous prime is 142990206209. The next prime is 142990206299. The reversal of 142990206238 is 832602099241.

It is a super-2 number, since 2×142990206238² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388348 + ... + 3430288.

It is an arithmetic number, because the mean of its divisors is an integer number (7549560000).

Almost surely, 2^142990206238 is an apocalyptic number.

142990206238 is a deficient number, since it is larger than the sum of its proper divisors (98595713762).

142990206238 is a wasteful number, since it uses less digits than its factorization.

142990206238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46984.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 142990206238 in words is "one hundred forty-two billion, nine hundred ninety million, two hundred six thousand, two hundred thirty-eight".