1215426106 has 8 divisors (see below), whose sum is σ = 1826344980. Its totient is φ = 606644448.

The previous prime is 1215426077. The next prime is 1215426109. The reversal of 1215426106 is 6016245121.

It can be written as a sum of positive squares in 2 ways, for example, as 938503225 + 276922881 = 30635^2 + 16641^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1215426109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532881 + ... + 535156.

Almost surely, 2^1215426106 is an apocalyptic number.

1215426106 is a deficient number, since it is larger than the sum of its proper divisors (610918874).

1215426106 is a wasteful number, since it uses less digits than its factorization.

1215426106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068608.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1215426106 is about 34862.9618076262. The cubic root of 1215426106 is about 1067.1927186257.

The spelling of 1215426106 in words is "one billion, two hundred fifteen million, four hundred twenty-six thousand, one hundred six".