142105512 has 32 divisors (see below), whose sum is σ = 361288800. Its totient is φ = 46565184.

The previous prime is 142105511. The next prime is 142105517. The reversal of 142105512 is 215501241.

It is not an unprimeable number, because it can be changed into a prime (142105511) 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 7 ways as a sum of consecutive naturals, for example, 48763 + ... + 51594.

It is an arithmetic number, because the mean of its divisors is an integer number (11290275).

Almost surely, 2^142105512 is an apocalyptic number.

142105512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142105512 is an abundant number, since it is smaller than the sum of its proper divisors (219183288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142105512 is a wasteful number, since it uses less digits than its factorization.

142105512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100425 (or 100421 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 142105512 is about 11920.8016508958. The cubic root of 142105512 is about 521.8395302462.

Adding to 142105512 its reverse (215501241), we get a palindrome (357606753).

The spelling of 142105512 in words is "one hundred forty-two million, one hundred five thousand, five hundred twelve".