202434140 has 24 divisors (see below), whose sum is σ = 429243360. Its totient is φ = 80186688.

The previous prime is 202434139. The next prime is 202434157. The reversal of 202434140 is 41434202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47075 + ... + 51194.

It is an arithmetic number, because the mean of its divisors is an integer number (17885140).

Almost surely, 2^202434140 is an apocalyptic number.

202434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202434140 is an abundant number, since it is smaller than the sum of its proper divisors (226809220).

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

202434140 is a wasteful number, since it uses less digits than its factorization.

202434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98381 (or 98379 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202434140 is about 14227.9351980532. The cubic root of 202434140 is about 587.1664767580.

Adding to 202434140 its reverse (41434202), we get a palindrome (243868342).

The spelling of 202434140 in words is "two hundred two million, four hundred thirty-four thousand, one hundred forty".