1542943 has 4 divisors (see below), whose sum is σ = 1566040. Its totient is φ = 1519848.

The previous prime is 1542941. The next prime is 1542973. The reversal of 1542943 is 3492451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3492451 = 409 ⋅8539.

It is a cyclic number.

It is not a de Polignac number, because 1542943 - 2¹ = 1542941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542941) 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 3 ways as a sum of consecutive naturals, for example, 11448 + ... + 11581.

It is an arithmetic number, because the mean of its divisors is an integer number (391510).

2^1542943 is an apocalyptic number.

1542943 is a deficient number, since it is larger than the sum of its proper divisors (23097).

1542943 is an equidigital number, since it uses as much as digits as its factorization.

1542943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23096.

The product of its digits is 4320, while the sum is 28.

The square root of 1542943 is about 1242.1525671189. The cubic root of 1542943 is about 115.5535505008.

It can be divided in two parts, 1542 and 943, that added together give a triangular number (2485 = T₇₀).

The spelling of 1542943 in words is "one million, five hundred forty-two thousand, nine hundred forty-three".