135670243 has 6 divisors (see below), whose sum is σ = 137792004. Its totient is φ = 133551396.

The previous prime is 135670219. The next prime is 135670277. The reversal of 135670243 is 342076531.

It is not a de Polignac number, because 135670243 - 2⁵ = 135670211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135670343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94630 + ... + 96052.

It is an arithmetic number, because the mean of its divisors is an integer number (22965334).

Almost surely, 2^135670243 is an apocalyptic number.

135670243 is a deficient number, since it is larger than the sum of its proper divisors (2121761).

135670243 is an frugal number, since it uses more digits than its factorization.

135670243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 135670243 is about 11647.7569943745. The cubic root of 135670243 is about 513.8403454243.

The spelling of 135670243 in words is "one hundred thirty-five million, six hundred seventy thousand, two hundred forty-three".