43234157 has 4 divisors (see below), whose sum is σ = 44725020. Its totient is φ = 41743296.

The previous prime is 43234151. The next prime is 43234159. The reversal of 43234157 is 75143234.

It is a happy number.

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 20376196 + 22857961 = 4514^2 + 4781^2 .

It is not a de Polignac number, because 43234157 - 2⁸ = 43233901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1490833 = 43234157 / (4 + 3 + 2 + 3 + 4 + 1 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43234151) 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, 745388 + ... + 745445.

It is an arithmetic number, because the mean of its divisors is an integer number (11181255).

Almost surely, 2^43234157 is an apocalyptic number.

It is an amenable number.

43234157 is a deficient number, since it is larger than the sum of its proper divisors (1490863).

43234157 is a wasteful number, since it uses less digits than its factorization.

43234157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490862.

The product of its digits is 10080, while the sum is 29.

The square root of 43234157 is about 6575.2685876700. The cubic root of 43234157 is about 350.9745816990.

The spelling of 43234157 in words is "forty-three million, two hundred thirty-four thousand, one hundred fifty-seven".