19802942 has 8 divisors (see below), whose sum is σ = 29735832. Its totient is φ = 9891000.

The previous prime is 19802941. The next prime is 19802957. The reversal of 19802942 is 24920891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19802941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (3716979).

Almost surely, 2^19802942 is an apocalyptic number.

19802942 is a deficient number, since it is larger than the sum of its proper divisors (9932890).

19802942 is a wasteful number, since it uses less digits than its factorization.

19802942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 19802942 is about 4450.0496626442. The cubic root of 19802942 is about 270.5473214077.

The spelling of 19802942 in words is "nineteen million, eight hundred two thousand, nine hundred forty-two".