202130442 has 24 divisors (see below), whose sum is σ = 463711716. Its totient is φ = 63413376.

The previous prime is 202130441. The next prime is 202130449. The reversal of 202130442 is 244031202.

It can be written as a sum of positive squares in 2 ways, for example, as 200250801 + 1879641 = 14151^2 + 1371^2 .

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 (202130441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329973 + ... + 330584.

Almost surely, 2^202130442 is an apocalyptic number.

202130442 is an abundant number, since it is smaller than the sum of its proper divisors (261581274).

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

202130442 is a wasteful number, since it uses less digits than its factorization.

202130442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660582 (or 660579 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 202130442 is about 14217.2585965087. The cubic root of 202130442 is about 586.8727013217.

Adding to 202130442 its reverse (244031202), we get a palindrome (446161644).

The spelling of 202130442 in words is "two hundred two million, one hundred thirty thousand, four hundred forty-two".