101249087 has 4 divisors (see below), whose sum is σ = 101274096. Its totient is φ = 101224080.

The previous prime is 101249041. The next prime is 101249089. The reversal of 101249087 is 780942101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780942101 = 73 ⋅10697837.

It is a cyclic number.

It is not a de Polignac number, because 101249087 - 2¹² = 101244991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101249089) 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, 4883 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (25318524).

Almost surely, 2^101249087 is an apocalyptic number.

101249087 is a deficient number, since it is larger than the sum of its proper divisors (25009).

101249087 is an equidigital number, since it uses as much as digits as its factorization.

101249087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25008.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 101249087 is about 10062.2605313120. The cubic root of 101249087 is about 466.0834749490.

The spelling of 101249087 in words is "one hundred one million, two hundred forty-nine thousand, eighty-seven".