402243401215 has 4 divisors (see below), whose sum is σ = 482692081464. Its totient is φ = 321794720968.

The previous prime is 402243401177. The next prime is 402243401243. The reversal of 402243401215 is 512104342204.

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 402243401215 - 2¹³ = 402243393023 is a prime.

It is a super-2 number, since 2×402243401215² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 40224340117 + ... + 40224340126.

It is an arithmetic number, because the mean of its divisors is an integer number (120673020366).

Almost surely, 2^402243401215 is an apocalyptic number.

402243401215 is a deficient number, since it is larger than the sum of its proper divisors (80448680249).

402243401215 is an equidigital number, since it uses as much as digits as its factorization.

402243401215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80448680248.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 402243401215 its reverse (512104342204), we get a palindrome (914347743419).

The spelling of 402243401215 in words is "four hundred two billion, two hundred forty-three million, four hundred one thousand, two hundred fifteen".