1939142 has 8 divisors (see below), whose sum is σ = 2928432. Its totient is φ = 963000.

The previous prime is 1939141. The next prime is 1939151. The reversal of 1939142 is 2419391.

It is a happy number.

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 (1939141) 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, 2909 + ... + 3512.

It is an arithmetic number, because the mean of its divisors is an integer number (366054).

2^1939142 is an apocalyptic number.

1939142 is a deficient number, since it is larger than the sum of its proper divisors (989290).

1939142 is a wasteful number, since it uses less digits than its factorization.

1939142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574.

The product of its digits is 1944, while the sum is 29.

The square root of 1939142 is about 1392.5307896057. The cubic root of 1939142 is about 124.7009812728.

Subtracting 1939142 from its reverse (2419391), we obtain a square (480249 = 693²).

The spelling of 1939142 in words is "one million, nine hundred thirty-nine thousand, one hundred forty-two".