117021386 has 4 divisors (see below), whose sum is σ = 175532082. Its totient is φ = 58510692.

The previous prime is 117021379. The next prime is 117021407. The reversal of 117021386 is 683120711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66113161 + 50908225 = 8131^2 + 7135^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29255345 + ... + 29255348.

Almost surely, 2^117021386 is an apocalyptic number.

117021386 is a deficient number, since it is larger than the sum of its proper divisors (58510696).

117021386 is an equidigital number, since it uses as much as digits as its factorization.

117021386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58510695.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 117021386 is about 10817.6423494216. The cubic root of 117021386 is about 489.1271229362.

The spelling of 117021386 in words is "one hundred seventeen million, twenty-one thousand, three hundred eighty-six".