202143942 has 144 divisors (see below), whose sum is σ = 591971328. Its totient is φ = 48409920.

The previous prime is 202143917. The next prime is 202143943. The reversal of 202143942 is 249341202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202143943) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 233803 + ... + 234665.

It is an arithmetic number, because the mean of its divisors is an integer number (4110912).

Almost surely, 2^202143942 is an apocalyptic number.

202143942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 202143942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295985664).

202143942 is an abundant number, since it is smaller than the sum of its proper divisors (389827386).

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

202143942 is a wasteful number, since it uses less digits than its factorization.

202143942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 202143942 is about 14217.7333636554. The cubic root of 202143942 is about 586.8857664906.

The spelling of 202143942 in words is "two hundred two million, one hundred forty-three thousand, nine hundred forty-two".