135351420420 has 48 divisors (see below), whose sum is σ = 401277155328. Its totient is φ = 33970552320.

The previous prime is 135351420409. The next prime is 135351420427. The reversal of 135351420420 is 24024153531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (135351420427) 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, 66347716 + ... + 66349755.

It is an arithmetic number, because the mean of its divisors is an integer number (8359940736).

Almost surely, 2^135351420420 is an apocalyptic number.

135351420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135351420420 is an abundant number, since it is smaller than the sum of its proper divisors (265925734908).

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

135351420420 is a wasteful number, since it uses less digits than its factorization.

135351420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132697500 (or 132697498 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 135351420420 its reverse (24024153531), we get a palindrome (159375573951).

The spelling of 135351420420 in words is "one hundred thirty-five billion, three hundred fifty-one million, four hundred twenty thousand, four hundred twenty".