23120149 has 4 divisors (see below), whose sum is σ = 24898636. Its totient is φ = 21341664.

The previous prime is 23120039. The next prime is 23120171. The reversal of 23120149 is 94102132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1199025 + 21921124 = 1095^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120149 - 2¹¹ = 23118101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889224 + ... + 889249.

It is an arithmetic number, because the mean of its divisors is an integer number (6224659).

Almost surely, 2^23120149 is an apocalyptic number.

It is an amenable number.

23120149 is a deficient number, since it is larger than the sum of its proper divisors (1778487).

23120149 is a wasteful number, since it uses less digits than its factorization.

23120149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778486.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 23120149 is about 4808.3416060010. The cubic root of 23120149 is about 284.8810378649.

The spelling of 23120149 in words is "twenty-three million, one hundred twenty thousand, one hundred forty-nine".