43120623 has 16 divisors (see below), whose sum is σ = 70762496. Its totient is φ = 22744800.

The previous prime is 43120603. The next prime is 43120657. The reversal of 43120623 is 32602134.

It is a happy number.

It is not a de Polignac number, because 43120623 - 2⁵ = 43120591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 43120623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43120603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78703 + ... + 79248.

It is an arithmetic number, because the mean of its divisors is an integer number (4422656).

Almost surely, 2^43120623 is an apocalyptic number.

43120623 is a deficient number, since it is larger than the sum of its proper divisors (27641873).

43120623 is a wasteful number, since it uses less digits than its factorization.

43120623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157974.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 43120623 is about 6566.6295007408. The cubic root of 43120623 is about 350.6670896439.

Adding to 43120623 its reverse (32602134), we get a palindrome (75722757).

The spelling of 43120623 in words is "forty-three million, one hundred twenty thousand, six hundred twenty-three".