2142055400 has 24 divisors (see below), whose sum is σ = 4980279270. Its totient is φ = 856822080.

The previous prime is 2142055397. The next prime is 2142055423. The reversal of 2142055400 is 45502412.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 848789956 + 1293265444 = 29134^2 + 35962^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5354939 + ... + 5355338.

Almost surely, 2^2142055400 is an apocalyptic number.

2142055400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142055400 is an abundant number, since it is smaller than the sum of its proper divisors (2838223870).

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

2142055400 is a wasteful number, since it uses less digits than its factorization.

2142055400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710293 (or 10710284 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2142055400 is about 46282.3443658594. The cubic root of 2142055400 is about 1289.0711820487.

Adding to 2142055400 its reverse (45502412), we get a palindrome (2187557812).

The spelling of 2142055400 in words is "two billion, one hundred forty-two million, fifty-five thousand, four hundred".