157842134 has 4 divisors (see below), whose sum is σ = 236763204. Its totient is φ = 78921066.

The previous prime is 157842131. The next prime is 157842149. The reversal of 157842134 is 431248751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431248751 = 139 ⋅3102509.

It is a junction number, because it is equal to n+sod(n) for n = 157842094 and 157842103.

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 as a sum of consecutive naturals, namely, 39460532 + ... + 39460535.

It is an arithmetic number, because the mean of its divisors is an integer number (59190801).

Almost surely, 2^157842134 is an apocalyptic number.

157842134 is a deficient number, since it is larger than the sum of its proper divisors (78921070).

157842134 is an equidigital number, since it uses as much as digits as its factorization.

157842134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78921069.

The product of its digits is 26880, while the sum is 35.

The square root of 157842134 is about 12563.5239483196. The cubic root of 157842134 is about 540.4319064009.

The spelling of 157842134 in words is "one hundred fifty-seven million, eight hundred forty-two thousand, one hundred thirty-four".