1642938 has 48 divisors (see below), whose sum is σ = 3779328. Its totient is φ = 475200.

The previous prime is 1642919. The next prime is 1642939. The reversal of 1642938 is 8392461.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1642899 and 1642908.

It is not an unprimeable number, because it can be changed into a prime (1642939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22470 + ... + 22542.

It is an arithmetic number, because the mean of its divisors is an integer number (78736).

2^1642938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889664).

1642938 is an abundant number, since it is smaller than the sum of its proper divisors (2136390).

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

1642938 is a wasteful number, since it uses less digits than its factorization.

1642938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 120 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 1642938 is about 1281.7714304820. The cubic root of 1642938 is about 117.9977496459.

The spelling of 1642938 in words is "one million, six hundred forty-two thousand, nine hundred thirty-eight".