101842459 has 4 divisors (see below), whose sum is σ = 106270416. Its totient is φ = 97414504.

The previous prime is 101842453. The next prime is 101842469. The reversal of 101842459 is 954248101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954248101 = 101 ⋅9448001.

It is a cyclic number.

It is not a de Polignac number, because 101842459 - 2²³ = 93453851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101842453) 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, 2213944 + ... + 2213989.

It is an arithmetic number, because the mean of its divisors is an integer number (26567604).

Almost surely, 2^101842459 is an apocalyptic number.

101842459 is a deficient number, since it is larger than the sum of its proper divisors (4427957).

101842459 is an equidigital number, since it uses as much as digits as its factorization.

101842459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427956.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 101842459 is about 10091.7024827330. The cubic root of 101842459 is about 466.9921987732.

The spelling of 101842459 in words is "one hundred one million, eight hundred forty-two thousand, four hundred fifty-nine".