1290242616 has 64 divisors (see below), whose sum is σ = 3481716000. Its totient is φ = 396085248.

The previous prime is 1290242587. The next prime is 1290242617. The reversal of 1290242616 is 6162420921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290242617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138060 + ... + 147108.

Almost surely, 2^1290242616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290242616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740858000).

1290242616 is an abundant number, since it is smaller than the sum of its proper divisors (2191473384).

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

1290242616 is a wasteful number, since it uses less digits than its factorization.

1290242616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528 (or 9524 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1290242616 is about 35919.9473273556. The cubic root of 1290242616 is about 1088.6554743120.

The spelling of 1290242616 in words is "one billion, two hundred ninety million, two hundred forty-two thousand, six hundred sixteen".