2122542144 has 70 divisors (see below), whose sum is σ = 6291895214. Its totient is φ = 707512320.

The previous prime is 2122542133. The next prime is 2122542173. The reversal of 2122542144 is 4412452212.

It is a happy number.

2122542144 is a `hidden beast` number, since 212 + 25 + 421 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1450695744 + 671846400 = 38088^2 + 25920^2 .

It is a super-2 number, since 2×2122542144² = 9010370306112233472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 199537 + ... + 209904.

Almost surely, 2^2122542144 is an apocalyptic number.

2122542144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2122542144 is an abundant number, since it is smaller than the sum of its proper divisors (4169353070).

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

2122542144 is an equidigital number, since it uses as much as digits as its factorization.

2122542144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409465 (or 409446 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 2122542144 is about 46071.0553818772. The cubic root of 2122542144 is about 1285.1449303847.

Adding to 2122542144 its reverse (4412452212), we get a palindrome (6534994356).

The spelling of 2122542144 in words is "two billion, one hundred twenty-two million, five hundred forty-two thousand, one hundred forty-four".