1040042 has 4 divisors (see below), whose sum is σ = 1560066. Its totient is φ = 520020.

The previous prime is 1040029. The next prime is 1040051. The reversal of 1040042 is 2400401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2400401 = 263 ⋅9127.

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 1681 = 1019^2 + 41^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260009 + ... + 260012.

2^1040042 is an apocalyptic number.

1040042 is a deficient number, since it is larger than the sum of its proper divisors (520024).

1040042 is an equidigital number, since it uses as much as digits as its factorization.

1040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520023.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1040042 is about 1019.8244947048. The cubic root of 1040042 is about 101.3173042321.

Adding to 1040042 its reverse (2400401), we get a palindrome (3440443).

The spelling of 1040042 in words is "one million, forty thousand, forty-two".