135026420 has 24 divisors (see below), whose sum is σ = 284590824. Its totient is φ = 53813376.

The previous prime is 135026389. The next prime is 135026471. The reversal of 135026420 is 24620531.

It can be written as a sum of positive squares in 4 ways, for example, as 327184 + 134699236 = 572^2 + 11606^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6647 + ... + 17726.

It is an arithmetic number, because the mean of its divisors is an integer number (11857951).

Almost surely, 2^135026420 is an apocalyptic number.

135026420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135026420 is an abundant number, since it is smaller than the sum of its proper divisors (149564404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135026420 is a wasteful number, since it uses less digits than its factorization.

135026420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24659 (or 24657 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 135026420 is about 11620.0869187799. The cubic root of 135026420 is about 513.0262466828.

Adding to 135026420 its reverse (24620531), we get a palindrome (159646951).

The spelling of 135026420 in words is "one hundred thirty-five million, twenty-six thousand, four hundred twenty".