1542042 has 12 divisors (see below), whose sum is σ = 3341130. Its totient is φ = 514008.

The previous prime is 1542041. The next prime is 1542043. The reversal of 1542042 is 2402451.

It is an interprime number because it is at equal distance from previous prime (1542041) and next prime (1542043).

It can be written as a sum of positive squares in only one way, i.e., 1320201 + 221841 = 1149^2 + 471^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 85669 = 1542042 / (1 + 5 + 4 + 2 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (1542041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42817 + ... + 42852.

2^1542042 is an apocalyptic number.

1542042 is an abundant number, since it is smaller than the sum of its proper divisors (1799088).

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

1542042 is a wasteful number, since it uses less digits than its factorization.

1542042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85677 (or 85674 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1542042 is about 1241.7898372913. The cubic root of 1542042 is about 115.5310536617.

Adding to 1542042 its reverse (2402451), we get a palindrome (3944493).

The spelling of 1542042 in words is "one million, five hundred forty-two thousand, forty-two".