135250247 has 16 divisors (see below), whose sum is σ = 150107904. Its totient is φ = 120840000.

The previous prime is 135250201. The next prime is 135250261. The reversal of 135250247 is 742052531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135250247 - 2¹⁶ = 135184711 is a prime.

It is a super-2 number, since 2×135250247² = 36585258627122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135250747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177347 + ... + 178107.

It is an arithmetic number, because the mean of its divisors is an integer number (9381744).

Almost surely, 2^135250247 is an apocalyptic number.

135250247 is a deficient number, since it is larger than the sum of its proper divisors (14857657).

135250247 is a wasteful number, since it uses less digits than its factorization.

135250247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030.

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

The square root of 135250247 is about 11629.7139689676. The cubic root of 135250247 is about 513.3095634221.

The spelling of 135250247 in words is "one hundred thirty-five million, two hundred fifty thousand, two hundred forty-seven".