157542205 has 12 divisors (see below), whose sum is σ = 199526652. Its totient is φ = 119399040.

The previous prime is 157542197. The next prime is 157542221. The reversal of 157542205 is 502245751.

It can be written as a sum of positive squares in 2 ways, for example, as 118940836 + 38601369 = 10906^2 + 6213^2 .

It is not a de Polignac number, because 157542205 - 2³ = 157542197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 41836 + ... + 45445.

It is an arithmetic number, because the mean of its divisors is an integer number (16627221).

Almost surely, 2^157542205 is an apocalyptic number.

It is an amenable number.

157542205 is a deficient number, since it is larger than the sum of its proper divisors (41984447).

157542205 is an equidigital number, since it uses as much as digits as its factorization.

157542205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87324 (or 87305 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 157542205 is about 12551.5817728285. The cubic root of 157542205 is about 540.0893827808.

Adding to 157542205 its reverse (502245751), we get a palindrome (659787956).

The spelling of 157542205 in words is "one hundred fifty-seven million, five hundred forty-two thousand, two hundred five".