157842133 has 4 divisors (see below), whose sum is σ = 160004428. Its totient is φ = 155679840.

The previous prime is 157842131. The next prime is 157842149. The reversal of 157842133 is 331248751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331248751 = 967 ⋅342553.

It can be written as a sum of positive squares in 2 ways, for example, as 39967684 + 117874449 = 6322^2 + 10857^2 .

It is a cyclic number.

It is not a de Polignac number, because 157842133 - 2¹ = 157842131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157842131) 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, 1081038 + ... + 1081183.

It is an arithmetic number, because the mean of its divisors is an integer number (40001107).

Almost surely, 2^157842133 is an apocalyptic number.

It is an amenable number.

157842133 is a deficient number, since it is larger than the sum of its proper divisors (2162295).

157842133 is an equidigital number, since it uses as much as digits as its factorization.

157842133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162294.

The product of its digits is 20160, while the sum is 34.

The square root of 157842133 is about 12563.5239085218. The cubic root of 157842133 is about 540.4319052597.

The spelling of 157842133 in words is "one hundred fifty-seven million, eight hundred forty-two thousand, one hundred thirty-three".