23402145 has 16 divisors (see below), whose sum is σ = 40324032. Its totient is φ = 11520960.

The previous prime is 23402143. The next prime is 23402161. The reversal of 23402145 is 54120432.

It is not a de Polignac number, because 23402145 - 2¹ = 23402143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23402143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59811 + ... + 60200.

It is an arithmetic number, because the mean of its divisors is an integer number (2520252).

Almost surely, 2^23402145 is an apocalyptic number.

It is an amenable number.

23402145 is a deficient number, since it is larger than the sum of its proper divisors (16921887).

23402145 is a wasteful number, since it uses less digits than its factorization.

23402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120032.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 23402145 is about 4837.5763559865. The cubic root of 23402145 is about 286.0345900101.

Adding to 23402145 its reverse (54120432), we get a palindrome (77522577).

The spelling of 23402145 in words is "twenty-three million, four hundred two thousand, one hundred forty-five".