157743843 has 4 divisors (see below), whose sum is σ = 210325128. Its totient is φ = 105162560.

The previous prime is 157743829. The next prime is 157743881. The reversal of 157743843 is 348347751.

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

It is a cyclic number.

It is not a de Polignac number, because 157743843 - 2⁴ = 157743827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157743795 and 157743804.

It is not an unprimeable number, because it can be changed into a prime (157743893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26290638 + ... + 26290643.

It is an arithmetic number, because the mean of its divisors is an integer number (52581282).

Almost surely, 2^157743843 is an apocalyptic number.

157743843 is a deficient number, since it is larger than the sum of its proper divisors (52581285).

157743843 is an equidigital number, since it uses as much as digits as its factorization.

157743843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52581284.

The product of its digits is 282240, while the sum is 42.

The square root of 157743843 is about 12559.6115783889. The cubic root of 157743843 is about 540.3197043732.

The spelling of 157743843 in words is "one hundred fifty-seven million, seven hundred forty-three thousand, eight hundred forty-three".