2051422240 has 144 divisors (see below), whose sum is σ = 5745283992. Its totient is φ = 689934336.

The previous prime is 2051422169. The next prime is 2051422291. The reversal of 2051422240 is 422241502.

It can be written as a sum of positive squares in 4 ways, for example, as 1766352784 + 285069456 = 42028^2 + 16884^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413052 + ... + 417988.

Almost surely, 2^2051422240 is an apocalyptic number.

2051422240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051422240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872641996).

2051422240 is an abundant number, since it is smaller than the sum of its proper divisors (3693861752).

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

2051422240 is a wasteful number, since it uses less digits than its factorization.

2051422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2051422240 is about 45292.6289808839. The cubic root of 2051422240 is about 1270.6278004638.

Adding to 2051422240 its reverse (422241502), we get a palindrome (2473663742).

The spelling of 2051422240 in words is "two billion, fifty-one million, four hundred twenty-two thousand, two hundred forty".