13142420 has 12 divisors (see below), whose sum is σ = 27599124. Its totient is φ = 5256960.

The previous prime is 13142417. The next prime is 13142431. The reversal of 13142420 is 2424131.

It can be written as a sum of positive squares in 2 ways, for example, as 2979076 + 10163344 = 1726^2 + 3188^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328541 + ... + 328580.

It is an arithmetic number, because the mean of its divisors is an integer number (2299927).

Almost surely, 2^13142420 is an apocalyptic number.

13142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13142420 is an abundant number, since it is smaller than the sum of its proper divisors (14456704).

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

13142420 is a wasteful number, since it uses less digits than its factorization.

13142420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657130 (or 657128 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13142420 is about 3625.2475777524. The cubic root of 13142420 is about 235.9890112666.

Adding to 13142420 its reverse (2424131), we get a palindrome (15566551).

The spelling of 13142420 in words is "thirteen million, one hundred forty-two thousand, four hundred twenty".