1940142 has 32 divisors (see below), whose sum is σ = 4292352. Its totient is φ = 581504.

The previous prime is 1940137. The next prime is 1940143. The reversal of 1940142 is 2410491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940143) 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 15 ways as a sum of consecutive naturals, for example, 1933 + ... + 2759.

It is an arithmetic number, because the mean of its divisors is an integer number (134136).

2^1940142 is an apocalyptic number.

1940142 is an abundant number, since it is smaller than the sum of its proper divisors (2352210).

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

1940142 is a wasteful number, since it uses less digits than its factorization.

1940142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1940142 is about 1392.8898018149. The cubic root of 1940142 is about 124.7224133549.

The spelling of 1940142 in words is "one million, nine hundred forty thousand, one hundred forty-two".