2542243320 has 320 divisors, whose sum is σ = 9155440800. Its totient is φ = 630789120.

The previous prime is 2542243309. The next prime is 2542243331. The reversal of 2542243320 is 233422452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2542243309) and next prime (2542243331).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3754822 + ... + 3755498.

Almost surely, 2^2542243320 is an apocalyptic number.

2542243320 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 2542243320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4577720400).

2542243320 is an abundant number, since it is smaller than the sum of its proper divisors (6613197480).

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

2542243320 is a wasteful number, since it uses less digits than its factorization.

2542243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 2542243320 is about 50420.6636211782. The cubic root of 2542243320 is about 1364.8105521404.

Adding to 2542243320 its reverse (233422452), we get a palindrome (2775665772).

The spelling of 2542243320 in words is "two billion, five hundred forty-two million, two hundred forty-three thousand, three hundred twenty".