15042226 has 4 divisors (see below), whose sum is σ = 22563342. Its totient is φ = 7521112.

The previous prime is 15042197. The next prime is 15042257. The reversal of 15042226 is 62224051.

15042226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10569001 + 4473225 = 3251^2 + 2115^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 15042197 and 15042206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3760555 + ... + 3760558.

Almost surely, 2^15042226 is an apocalyptic number.

15042226 is a deficient number, since it is larger than the sum of its proper divisors (7521116).

15042226 is an equidigital number, since it uses as much as digits as its factorization.

15042226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521115.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 15042226 is about 3878.4308682765. The cubic root of 15042226 is about 246.8524089994.

Adding to 15042226 its reverse (62224051), we get a palindrome (77266277).

The spelling of 15042226 in words is "fifteen million, forty-two thousand, two hundred twenty-six".