157940203 has 2 divisors, whose sum is σ = 157940204. Its totient is φ = 157940202.

The previous prime is 157940147. The next prime is 157940221. The reversal of 157940203 is 302049751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157940203 is a prime.

It is not a weakly prime, because it can be changed into another prime (157940803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78970101 + 78970102.

It is an arithmetic number, because the mean of its divisors is an integer number (78970102).

Almost surely, 2^157940203 is an apocalyptic number.

157940203 is a deficient number, since it is larger than the sum of its proper divisors (1).

157940203 is an equidigital number, since it uses as much as digits as its factorization.

157940203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 157940203 is about 12567.4262679357. The cubic root of 157940203 is about 540.5438085964.

Adding to 157940203 its reverse (302049751), we get a palindrome (459989954).

The spelling of 157940203 in words is "one hundred fifty-seven million, nine hundred forty thousand, two hundred three".