15142420 has 24 divisors (see below), whose sum is σ = 31901184. Its totient is φ = 6037536.

The previous prime is 15142403. The next prime is 15142429. The reversal of 15142420 is 2424151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6309 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (1329216).

Almost surely, 2^15142420 is an apocalyptic number.

15142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15142420 is an abundant number, since it is smaller than the sum of its proper divisors (16758764).

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

15142420 is a wasteful number, since it uses less digits than its factorization.

15142420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 15142420 is about 3891.3262520637. The cubic root of 15142420 is about 247.3992788139.

Adding to 15142420 its reverse (2424151), we get a palindrome (17566571).

The spelling of 15142420 in words is "fifteen million, one hundred forty-two thousand, four hundred twenty".