135570242 has 4 divisors (see below), whose sum is σ = 203355366. Its totient is φ = 67785120.

The previous prime is 135570217. The next prime is 135570251. The reversal of 135570242 is 242075531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242075531 = 5441 ⋅44491.

It can be written as a sum of positive squares in only one way, i.e., 85174441 + 50395801 = 9229^2 + 7099^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33892559 + ... + 33892562.

Almost surely, 2^135570242 is an apocalyptic number.

135570242 is a deficient number, since it is larger than the sum of its proper divisors (67785124).

135570242 is an equidigital number, since it uses as much as digits as its factorization.

135570242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67785123.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 135570242 is about 11643.4634881551. The cubic root of 135570242 is about 513.7140657592.

The spelling of 135570242 in words is "one hundred thirty-five million, five hundred seventy thousand, two hundred forty-two".