2115420144 has 20 divisors (see below), whose sum is σ = 5464835496. Its totient is φ = 705140032.

The previous prime is 2115420127. The next prime is 2115420169. The reversal of 2115420144 is 4410245112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22035579 + ... + 22035674.

Almost surely, 2^2115420144 is an apocalyptic number.

2115420144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2115420144 is an abundant number, since it is smaller than the sum of its proper divisors (3349415352).

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

2115420144 is a wasteful number, since it uses less digits than its factorization.

2115420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44071264 (or 44071258 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2115420144 is about 45993.6967855379. The cubic root of 2115420144 is about 1283.7059234715.

Adding to 2115420144 its reverse (4410245112), we get a palindrome (6525665256).

The spelling of 2115420144 in words is "two billion, one hundred fifteen million, four hundred twenty thousand, one hundred forty-four".