135453421 has 2 divisors, whose sum is σ = 135453422. Its totient is φ = 135453420.

The previous prime is 135453401. The next prime is 135453469. The reversal of 135453421 is 124354531.

135453421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72012196 + 63441225 = 8486^2 + 7965^2 .

It is a cyclic number.

It is not a de Polignac number, because 135453421 - 2⁷ = 135453293 is a prime.

It is a super-5 number, since 5×135453421⁵ (a number of 42 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135453421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135453401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67726710 + 67726711.

It is an arithmetic number, because the mean of its divisors is an integer number (67726711).

Almost surely, 2^135453421 is an apocalyptic number.

It is an amenable number.

135453421 is a deficient number, since it is larger than the sum of its proper divisors (1).

135453421 is an equidigital number, since it uses as much as digits as its factorization.

135453421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 135453421 is about 11638.4458154858. The cubic root of 135453421 is about 513.5664673977.

The spelling of 135453421 in words is "one hundred thirty-five million, four hundred fifty-three thousand, four hundred twenty-one".