157043 has 4 divisors (see below), whose sum is σ = 158760. Its totient is φ = 155328.

The previous prime is 157037. The next prime is 157049. The reversal of 157043 is 340751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340751 = 41 ⋅8311.

It is an interprime number because it is at equal distance from previous prime (157037) and next prime (157049).

It is a cyclic number.

It is not a de Polignac number, because 157043 - 2⁶ = 156979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157049) 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, 713 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2¹⁵⁷⁰⁴³ is an apocalyptic number.

157043 is a deficient number, since it is larger than the sum of its proper divisors (1717).

157043 is an equidigital number, since it uses as much as digits as its factorization.

157043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 157043 is about 396.2865125134. The cubic root of 157043 is about 53.9518317607.

Adding to 157043 its reverse (340751), we get a palindrome (497794).

The spelling of 157043 in words is "one hundred fifty-seven thousand, forty-three".