210001942 has 4 divisors (see below), whose sum is σ = 315002916. Its totient is φ = 105000970.

The previous prime is 210001933. The next prime is 210001943. The reversal of 210001942 is 249100012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500484 + ... + 52500487.

It is an arithmetic number, because the mean of its divisors is an integer number (78750729).

Almost surely, 2^210001942 is an apocalyptic number.

210001942 is a deficient number, since it is larger than the sum of its proper divisors (105000974).

210001942 is a wasteful number, since it uses less digits than its factorization.

210001942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105000973.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 210001942 is about 14491.4437514003. The cubic root of 210001942 is about 594.3940275082.

Adding to 210001942 its reverse (249100012), we get a palindrome (459101954).

The spelling of 210001942 in words is "two hundred ten million, one thousand, nine hundred forty-two".