142136770 has 8 divisors (see below), whose sum is σ = 255846204. Its totient is φ = 56854704.

The previous prime is 142136747. The next prime is 142136773. The reversal of 142136770 is 77631241.

It can be written as a sum of positive squares in 2 ways, for example, as 119924401 + 22212369 = 10951^2 + 4713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×142136770² = 40405722772065800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142136773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7106829 + ... + 7106848.

Almost surely, 2^142136770 is an apocalyptic number.

142136770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142136770 is a deficient number, since it is larger than the sum of its proper divisors (113709434).

142136770 is a wasteful number, since it uses less digits than its factorization.

142136770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14213684.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 142136770 is about 11922.1126483522. The cubic root of 142136770 is about 521.8777892927.

The spelling of 142136770 in words is "one hundred forty-two million, one hundred thirty-six thousand, seven hundred seventy".