117235421 has 4 divisors (see below), whose sum is σ = 118091292. Its totient is φ = 116379552.

The previous prime is 117235411. The next prime is 117235423. The reversal of 117235421 is 124532711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124532711 = 691 ⋅180221.

It can be written as a sum of positive squares in 2 ways, for example, as 42758521 + 74476900 = 6539^2 + 8630^2 .

It is a cyclic number.

It is not a de Polignac number, because 117235421 - 2⁶ = 117235357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117235423) 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, 427730 + ... + 428003.

It is an arithmetic number, because the mean of its divisors is an integer number (29522823).

Almost surely, 2^117235421 is an apocalyptic number.

It is an amenable number.

117235421 is a deficient number, since it is larger than the sum of its proper divisors (855871).

117235421 is an equidigital number, since it uses as much as digits as its factorization.

117235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855870.

The product of its digits is 1680, while the sum is 26.

The square root of 117235421 is about 10827.5306972550. The cubic root of 117235421 is about 489.4251498327.

The spelling of 117235421 in words is "one hundred seventeen million, two hundred thirty-five thousand, four hundred twenty-one".