202157442 has 24 divisors (see below), whose sum is σ = 457052544. Its totient is φ = 64455864.

The previous prime is 202157437. The next prime is 202157443. The reversal of 202157442 is 244751202.

202157442 is a `hidden beast` number, since 2 + 0 + 215 + 7 + 442 = 666.

It is not an unprimeable number, because it can be changed into a prime (202157443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243738 + ... + 244565.

It is an arithmetic number, because the mean of its divisors is an integer number (19043856).

Almost surely, 2^202157442 is an apocalyptic number.

202157442 is an abundant number, since it is smaller than the sum of its proper divisors (254895102).

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

202157442 is a wasteful number, since it uses less digits than its factorization.

202157442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488334 (or 488331 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 202157442 is about 14218.2081149489. The cubic root of 202157442 is about 586.8988310778.

The spelling of 202157442 in words is "two hundred two million, one hundred fifty-seven thousand, four hundred forty-two".