201646942 has 16 divisors (see below), whose sum is σ = 345894912. Its totient is φ = 86366520.

The previous prime is 201646903. The next prime is 201646987. The reversal of 201646942 is 249646102.

It is a super-2 number, since 2×201646942² = 81322978435902728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201646898 and 201646907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26143 + ... + 32965.

It is an arithmetic number, because the mean of its divisors is an integer number (21618432).

Almost surely, 2^201646942 is an apocalyptic number.

201646942 is a deficient number, since it is larger than the sum of its proper divisors (144247970).

201646942 is a wasteful number, since it uses less digits than its factorization.

201646942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8943.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 201646942 is about 14200.2444345159. The cubic root of 201646942 is about 586.4043906985.

The spelling of 201646942 in words is "two hundred one million, six hundred forty-six thousand, nine hundred forty-two".