13540150420 has 24 divisors (see below), whose sum is σ = 28685951784. Its totient is φ = 5368129536.

The previous prime is 13540150391. The next prime is 13540150423. The reversal of 13540150420 is 2405104531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1111022224 + 12429128196 = 33332^2 + 111486^2 .

It is a super-5 number, since 5×13540150420⁵ (a number of 52 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540150423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2993349 + ... + 2997868.

It is an arithmetic number, because the mean of its divisors is an integer number (1195247991).

Almost surely, 2^13540150420 is an apocalyptic number.

13540150420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13540150420 is an abundant number, since it is smaller than the sum of its proper divisors (15145801364).

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

13540150420 is a wasteful number, since it uses less digits than its factorization.

13540150420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991339 (or 5991337 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 13540150420 its reverse (2405104531), we get a palindrome (15945254951).

The spelling of 13540150420 in words is "thirteen billion, five hundred forty million, one hundred fifty thousand, four hundred twenty".