157542943 has 4 divisors (see below), whose sum is σ = 158413528. Its totient is φ = 156672360.

The previous prime is 157542941. The next prime is 157542947. The reversal of 157542943 is 349245751.

It is a happy number.

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 157542943 - 2¹ = 157542941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157542896 and 157542905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157542941) 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, 435021 + ... + 435382.

It is an arithmetic number, because the mean of its divisors is an integer number (39603382).

Almost surely, 2^157542943 is an apocalyptic number.

157542943 is a deficient number, since it is larger than the sum of its proper divisors (870585).

157542943 is an equidigital number, since it uses as much as digits as its factorization.

157542943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870584.

The product of its digits is 151200, while the sum is 40.

The square root of 157542943 is about 12551.6111714791. The cubic root of 157542943 is about 540.0902261217.

The spelling of 157542943 in words is "one hundred fifty-seven million, five hundred forty-two thousand, nine hundred forty-three".