15212042 has 16 divisors (see below), whose sum is σ = 24328512. Its totient is φ = 7108800.

The previous prime is 15212033. The next prime is 15212047. The reversal of 15212042 is 24021251.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 15212042.

It is not an unprimeable number, because it can be changed into a prime (15212047) 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, 3653 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (1520532).

Almost surely, 2^15212042 is an apocalyptic number.

15212042 is a deficient number, since it is larger than the sum of its proper divisors (9116470).

15212042 is a wasteful number, since it uses less digits than its factorization.

15212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15212042 is about 3900.2617860856. The cubic root of 15212042 is about 247.7778643060. Note that the first 3 decimals are identical.

Adding to 15212042 its reverse (24021251), we get a palindrome (39233293).

The spelling of 15212042 in words is "fifteen million, two hundred twelve thousand, forty-two".