1042401566 has 4 divisors (see below), whose sum is σ = 1563602352. Its totient is φ = 521200782.

The previous prime is 1042401551. The next prime is 1042401637. The reversal of 1042401566 is 6651042401.

1042401566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6651042401 = 5347 ⋅1243883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260600390 + ... + 260600393.

It is an arithmetic number, because the mean of its divisors is an integer number (390900588).

Almost surely, 2^1042401566 is an apocalyptic number.

1042401566 is a deficient number, since it is larger than the sum of its proper divisors (521200786).

1042401566 is an equidigital number, since it uses as much as digits as its factorization.

1042401566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521200785.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1042401566 is about 32286.2442225788. The cubic root of 1042401566 is about 1013.9386662195.

Adding to 1042401566 its reverse (6651042401), we get a palindrome (7693443967).

The spelling of 1042401566 in words is "one billion, forty-two million, four hundred one thousand, five hundred sixty-six".