402043155445 has 8 divisors (see below), whose sum is σ = 482457904344. Its totient is φ = 321630445824.

The previous prime is 402043155433. The next prime is 402043155467. The reversal of 402043155445 is 544551340204.

It can be written as a sum of positive squares in 4 ways, for example, as 196196049 + 401846959396 = 14007^2 + 633914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402043155445 - 2⁵ = 402043155413 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 36064 + ... + 897433.

It is an arithmetic number, because the mean of its divisors is an integer number (60307238043).

Almost surely, 2^402043155445 is an apocalyptic number.

It is an amenable number.

402043155445 is a deficient number, since it is larger than the sum of its proper divisors (80414748899).

402043155445 is an equidigital number, since it uses as much as digits as its factorization.

402043155445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019639.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 402043155445 its reverse (544551340204), we get a palindrome (946594495649).

The spelling of 402043155445 in words is "four hundred two billion, forty-three million, one hundred fifty-five thousand, four hundred forty-five".