2120442550 has 48 divisors (see below), whose sum is σ = 4043915280. Its totient is φ = 826899840.

The previous prime is 2120442547. The next prime is 2120442559. The reversal of 2120442550 is 552440212.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120442559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429496 + ... + 434404.

It is an arithmetic number, because the mean of its divisors is an integer number (84248235).

Almost surely, 2^2120442550 is an apocalyptic number.

2120442550 is a deficient number, since it is larger than the sum of its proper divisors (1923472730).

2120442550 is a wasteful number, since it uses less digits than its factorization.

2120442550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137 (or 5132 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2120442550 is about 46048.2632680104. The cubic root of 2120442550 is about 1284.7210404461.

Adding to 2120442550 its reverse (552440212), we get a palindrome (2672882762).

The spelling of 2120442550 in words is "two billion, one hundred twenty million, four hundred forty-two thousand, five hundred fifty".