117621742 has 72 divisors (see below), whose sum is σ = 231580944. Its totient is φ = 43732224.

The previous prime is 117621733. The next prime is 117621773. The reversal of 117621742 is 247126711.

It is a super-2 number, since 2×117621742² = 27669748382229128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3178948 + ... + 3178984.

It is an arithmetic number, because the mean of its divisors is an integer number (3216402).

Almost surely, 2^117621742 is an apocalyptic number.

117621742 is a deficient number, since it is larger than the sum of its proper divisors (113959202).

117621742 is a wasteful number, since it uses less digits than its factorization.

117621742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 82 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 117621742 is about 10845.3557802407. The cubic root of 117621742 is about 489.9621545115.

The spelling of 117621742 in words is "one hundred seventeen million, six hundred twenty-one thousand, seven hundred forty-two".