12155402 has 16 divisors (see below), whose sum is σ = 21935040. Its totient is φ = 4935168.

The previous prime is 12155401. The next prime is 12155419. The reversal of 12155402 is 20455121.

12155402 is nontrivially palindromic in base 11.

12155402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12155401) 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, 22583 + ... + 23114.

It is an arithmetic number, because the mean of its divisors is an integer number (1370940).

Almost surely, 2^12155402 is an apocalyptic number.

12155402 is a deficient number, since it is larger than the sum of its proper divisors (9779638).

12155402 is a wasteful number, since it uses less digits than its factorization.

12155402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45725.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12155402 is about 3486.4598090327. The cubic root of 12155402 is about 229.9268954811.

The spelling of 12155402 in words is "twelve million, one hundred fifty-five thousand, four hundred two".