117420145 has 8 divisors (see below), whose sum is σ = 141208704. Its totient is φ = 93733104.

The previous prime is 117420137. The next prime is 117420151. The reversal of 117420145 is 541024711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117420145 - 2³ = 117420137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22809 + ... + 27478.

It is an arithmetic number, because the mean of its divisors is an integer number (17651088).

Almost surely, 2^117420145 is an apocalyptic number.

It is an amenable number.

117420145 is a deficient number, since it is larger than the sum of its proper divisors (23788559).

117420145 is an equidigital number, since it uses as much as digits as its factorization.

117420145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50759.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 117420145 is about 10836.0576318143. The cubic root of 117420145 is about 489.6820719799.

Adding to 117420145 its reverse (541024711), we get a palindrome (658444856).

The spelling of 117420145 in words is "one hundred seventeen million, four hundred twenty thousand, one hundred forty-five".