117057021 has 16 divisors (see below), whose sum is σ = 161736960. Its totient is φ = 75216960.

The previous prime is 117057001. The next prime is 117057041. The reversal of 117057021 is 120750711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (117057001) and next prime (117057041).

It is not a de Polignac number, because 117057021 - 2⁷ = 117056893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117056982 and 117057000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117057001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94476 + ... + 95706.

It is an arithmetic number, because the mean of its divisors is an integer number (10108560).

Almost surely, 2^117057021 is an apocalyptic number.

It is an amenable number.

117057021 is a deficient number, since it is larger than the sum of its proper divisors (44679939).

117057021 is a wasteful number, since it uses less digits than its factorization.

117057021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 117057021 is about 10819.2893019828. The cubic root of 117057021 is about 489.1767670701.

The spelling of 117057021 in words is "one hundred seventeen million, fifty-seven thousand, twenty-one".