402243041023 has 4 divisors (see below), whose sum is σ = 402277767640. Its totient is φ = 402208314408.

The previous prime is 402243041021. The next prime is 402243041051. The reversal of 402243041023 is 320140342204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402243041023 - 2¹ = 402243041021 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 (402243041021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17345928 + ... + 17369101.

It is an arithmetic number, because the mean of its divisors is an integer number (100569441910).

Almost surely, 2^402243041023 is an apocalyptic number.

402243041023 is a deficient number, since it is larger than the sum of its proper divisors (34726617).

402243041023 is a wasteful number, since it uses less digits than its factorization.

402243041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34726616.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 402243041023 its reverse (320140342204), we get a palindrome (722383383227).

The spelling of 402243041023 in words is "four hundred two billion, two hundred forty-three million, forty-one thousand, twenty-three".