117121654 has 16 divisors (see below), whose sum is σ = 189772128. Its totient is φ = 53891712.

The previous prime is 117121601. The next prime is 117121657. The reversal of 117121654 is 456121711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117121657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079 + ... + 15445.

It is an arithmetic number, because the mean of its divisors is an integer number (11860758).

Almost surely, 2^117121654 is an apocalyptic number.

117121654 is a deficient number, since it is larger than the sum of its proper divisors (72650474).

117121654 is a wasteful number, since it uses less digits than its factorization.

117121654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719.

The product of its digits is 1680, while the sum is 28.

The square root of 117121654 is about 10822.2758235040. The cubic root of 117121654 is about 489.2667834411.

It can be divided in two parts, 11712 and 1654, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 117121654 in words is "one hundred seventeen million, one hundred twenty-one thousand, six hundred fifty-four".