101872149 has 8 divisors (see below), whose sum is σ = 137742912. Its totient is φ = 66958080.

The previous prime is 101872139. The next prime is 101872151. The reversal of 101872149 is 941278101.

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

It is not a de Polignac number, because 101872149 - 2⁸ = 101871893 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101872139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238924 + ... + 239349.

It is an arithmetic number, because the mean of its divisors is an integer number (17217864).

Almost surely, 2^101872149 is an apocalyptic number.

It is an amenable number.

101872149 is a deficient number, since it is larger than the sum of its proper divisors (35870763).

101872149 is an equidigital number, since it uses as much as digits as its factorization.

101872149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478347.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 101872149 is about 10093.1733860070. The cubic root of 101872149 is about 467.0375749074.

The spelling of 101872149 in words is "one hundred one million, eight hundred seventy-two thousand, one hundred forty-nine".