201942405 has 96 divisors (see below), whose sum is σ = 433914624. Its totient is φ = 84768768.

The previous prime is 201942383. The next prime is 201942421. The reversal of 201942405 is 504249102.

It is not a de Polignac number, because 201942405 - 2⁸ = 201942149 is a prime.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 229827 + ... + 230703.

It is an arithmetic number, because the mean of its divisors is an integer number (4519944).

Almost surely, 2^201942405 is an apocalyptic number.

It is an amenable number.

201942405 is an abundant number, since it is smaller than the sum of its proper divisors (231972219).

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

201942405 is a wasteful number, since it uses less digits than its factorization.

201942405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 201942405 is about 14210.6440740735. The cubic root of 201942405 is about 586.6906604268.

The spelling of 201942405 in words is "two hundred one million, nine hundred forty-two thousand, four hundred five".