15210042 has 8 divisors (see below), whose sum is σ = 30420096. Its totient is φ = 5070012.

The previous prime is 15210037. The next prime is 15210043. The reversal of 15210042 is 24001251.

It is a sphenic number, since it is the product of 3 distinct primes.

15210042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (15210043) 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 3 ways as a sum of consecutive naturals, for example, 1267498 + ... + 1267509.

It is an arithmetic number, because the mean of its divisors is an integer number (3802512).

Almost surely, 2^15210042 is an apocalyptic number.

15210042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15210042 is a wasteful number, since it uses less digits than its factorization.

15210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535012.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 15210042 is about 3900.0053846117. The cubic root of 15210042 is about 247.7670049827.

Adding to 15210042 its reverse (24001251), we get a palindrome (39211293).

The spelling of 15210042 in words is "fifteen million, two hundred ten thousand, forty-two".