1929942 has 72 divisors (see below), whose sum is σ = 5172336. Its totient is φ = 509184.

The previous prime is 1929929. The next prime is 1929943. The reversal of 1929942 is 2499291.

It is a super-2 number, since 2×1929942² = 7449352246728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1929897 and 1929906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1929943) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 36388 + ... + 36440.

It is an arithmetic number, because the mean of its divisors is an integer number (71838).

2^1929942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1929942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586168).

1929942 is an abundant number, since it is smaller than the sum of its proper divisors (3242394).

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

1929942 is a wasteful number, since it uses less digits than its factorization.

1929942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 82 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1929942 is about 1389.2235241314. The cubic root of 1929942 is about 124.5034595255.

The spelling of 1929942 in words is "one million, nine hundred twenty-nine thousand, nine hundred forty-two".