2142450 has 90 divisors (see below), whose sum is σ = 6222909. Its totient is φ = 546480.

The previous prime is 2142449. The next prime is 2142457. The reversal of 2142450 is 542412.

2142450 is a `hidden beast` number, since 214 + 2 + 450 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 42849 = 1449^2 + 207^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1035.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2142457) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 93139 + ... + 93161.

2^2142450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142450

2142450 is an abundant number, since it is smaller than the sum of its proper divisors (4080459).

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

2142450 is a wasteful number, since it uses less digits than its factorization.

2142450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2142450 is about 1463.7110370562. The cubic root of 2142450 is about 128.9150332858.

Multiplying 2142450 by its sum of digits (18), we get a square (38564100 = 6210²).

2142450 divided by its sum of digits (18) gives a square (119025 = 345²).

Adding to 2142450 its reverse (542412), we get a palindrome (2684862).

The spelling of 2142450 in words is "two million, one hundred forty-two thousand, four hundred fifty".