135059200421 has 2 divisors, whose sum is σ = 135059200422. Its totient is φ = 135059200420.

The previous prime is 135059200279. The next prime is 135059200483. The reversal of 135059200421 is 124002950531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71700772900 + 63358427521 = 267770^2 + 251711^2 .

It is a cyclic number.

It is not a de Polignac number, because 135059200421 - 2²² = 135055006117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135059220421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67529600210 + 67529600211.

It is an arithmetic number, because the mean of its divisors is an integer number (67529600211).

Almost surely, 2^135059200421 is an apocalyptic number.

It is an amenable number.

135059200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

135059200421 is an equidigital number, since it uses as much as digits as its factorization.

135059200421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 135059200421 in words is "one hundred thirty-five billion, fifty-nine million, two hundred thousand, four hundred twenty-one".