1215054126 has 96 divisors (see below), whose sum is σ = 3123574272. Its totient is φ = 336502080.

The previous prime is 1215054119. The next prime is 1215054149. The reversal of 1215054126 is 6214505121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215054126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262831 + ... + 267413.

It is an arithmetic number, because the mean of its divisors is an integer number (32537232).

Almost surely, 2^1215054126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215054126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561787136).

1215054126 is an abundant number, since it is smaller than the sum of its proper divisors (1908520146).

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

1215054126 is a wasteful number, since it uses less digits than its factorization.

1215054126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1215054126 is about 34857.6265112816. The cubic root of 1215054126 is about 1067.0838364127.

Adding to 1215054126 its reverse (6214505121), we get a palindrome (7429559247).

The spelling of 1215054126 in words is "one billion, two hundred fifteen million, fifty-four thousand, one hundred twenty-six".