101129642 has 8 divisors (see below), whose sum is σ = 152852832. Its totient is φ = 50178700.

The previous prime is 101129603. The next prime is 101129663. The reversal of 101129642 is 246921101.

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

It is an unprimeable number.

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, 192734 + ... + 193257.

It is an arithmetic number, because the mean of its divisors is an integer number (19106604).

Almost surely, 2^101129642 is an apocalyptic number.

101129642 is a deficient number, since it is larger than the sum of its proper divisors (51723190).

101129642 is a wasteful number, since it uses less digits than its factorization.

101129642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386124.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 101129642 is about 10056.3234832617. The cubic root of 101129642 is about 465.9001210417.

The spelling of 101129642 in words is "one hundred one million, one hundred twenty-nine thousand, six hundred forty-two".