101142199 has 4 divisors (see below), whose sum is σ = 102422560. Its totient is φ = 99861840.

The previous prime is 101142193. The next prime is 101142211. The reversal of 101142199 is 991241101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991241101 = 8431 ⋅117571.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101142199 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 (101142193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640062 + ... + 640219.

It is an arithmetic number, because the mean of its divisors is an integer number (25605640).

Almost surely, 2^101142199 is an apocalyptic number.

101142199 is a deficient number, since it is larger than the sum of its proper divisors (1280361).

101142199 is an equidigital number, since it uses as much as digits as its factorization.

101142199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280360.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 101142199 is about 10056.9477974185. The cubic root of 101142199 is about 465.9194034387.

The spelling of 101142199 in words is "one hundred one million, one hundred forty-two thousand, one hundred ninety-nine".