135467621 has 4 divisors (see below), whose sum is σ = 135546912. Its totient is φ = 135388332.

The previous prime is 135467617. The next prime is 135467623. The reversal of 135467621 is 126764531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126764531 = 5869 ⋅21599.

It is a cyclic number.

It is not a de Polignac number, because 135467621 - 2² = 135467617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135467623) 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, 37025 + ... + 40518.

It is an arithmetic number, because the mean of its divisors is an integer number (33886728).

Almost surely, 2^135467621 is an apocalyptic number.

It is an amenable number.

135467621 is a deficient number, since it is larger than the sum of its proper divisors (79291).

135467621 is an equidigital number, since it uses as much as digits as its factorization.

135467621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79290.

The product of its digits is 30240, while the sum is 35.

The square root of 135467621 is about 11639.0558465882. The cubic root of 135467621 is about 513.5844130230.

The spelling of 135467621 in words is "one hundred thirty-five million, four hundred sixty-seven thousand, six hundred twenty-one".