1040401042 has 16 divisors (see below), whose sum is σ = 1616088600. Its totient is φ = 501742080.

The previous prime is 1040401009. The next prime is 1040401091. The reversal of 1040401042 is 2401040401.

It can be written as a sum of positive squares in 4 ways, for example, as 646735761 + 393665281 = 25431^2 + 19841^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50434 + ... + 68002.

Almost surely, 2^1040401042 is an apocalyptic number.

1040401042 is a deficient number, since it is larger than the sum of its proper divisors (575687558).

1040401042 is a wasteful number, since it uses less digits than its factorization.

1040401042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18621.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1040401042 is about 32255.2482861317. The cubic root of 1040401042 is about 1013.2896176846.

Adding to 1040401042 its reverse (2401040401), we get a palindrome (3441441443).

The spelling of 1040401042 in words is "one billion, forty million, four hundred one thousand, forty-two".