101442187 has 16 divisors (see below), whose sum is σ = 128212992. Its totient is φ = 77958720.

The previous prime is 101442161. The next prime is 101442217. The reversal of 101442187 is 781244101.

It is not a de Polignac number, because 101442187 - 2⁷ = 101442059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101442287) 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 15 ways as a sum of consecutive naturals, for example, 3403 + ... + 14644.

It is an arithmetic number, because the mean of its divisors is an integer number (8013312).

Almost surely, 2^101442187 is an apocalyptic number.

101442187 is a deficient number, since it is larger than the sum of its proper divisors (26770805).

101442187 is a wasteful number, since it uses less digits than its factorization.

101442187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18138.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 101442187 is about 10071.8512201084. The cubic root of 101442187 is about 466.3795881171.

Adding to 101442187 its reverse (781244101), we get a palindrome (882686288).

It can be divided in two parts, 10144218 and 7, that added together give a square (10144225 = 3185²).

The spelling of 101442187 in words is "one hundred one million, four hundred forty-two thousand, one hundred eighty-seven".