117642101 has 4 divisors (see below), whose sum is σ = 119299104. Its totient is φ = 115985100.

The previous prime is 117642071. The next prime is 117642121. The reversal of 117642101 is 101246711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101246711 = 421 ⋅240491.

It is a cyclic number.

It is not a de Polignac number, because 117642101 - 2¹⁸ = 117379957 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 (117642121) 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, 828395 + ... + 828536.

It is an arithmetic number, because the mean of its divisors is an integer number (29824776).

Almost surely, 2^117642101 is an apocalyptic number.

It is an amenable number.

117642101 is a deficient number, since it is larger than the sum of its proper divisors (1657003).

117642101 is an equidigital number, since it uses as much as digits as its factorization.

117642101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657002.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 117642101 is about 10846.2943441528. The cubic root of 117642101 is about 489.9904218591.

Adding to 117642101 its reverse (101246711), we get a palindrome (218888812).

The spelling of 117642101 in words is "one hundred seventeen million, six hundred forty-two thousand, one hundred one".