1920142 has 8 divisors (see below), whose sum is σ = 3291696. Its totient is φ = 822912.

The previous prime is 1920101. The next prime is 1920143. The reversal of 1920142 is 2410291.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68563 + ... + 68590.

It is an arithmetic number, because the mean of its divisors is an integer number (411462).

2^1920142 is an apocalyptic number.

1920142 is a deficient number, since it is larger than the sum of its proper divisors (1371554).

1920142 is a wasteful number, since it uses less digits than its factorization.

1920142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137162.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1920142 is about 1385.6918849441. The cubic root of 1920142 is about 124.2923642391.

The spelling of 1920142 in words is "one million, nine hundred twenty thousand, one hundred forty-two".